Acrobat Javascript Samples Scripts.

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JavaScripts in PDFs as a security risk.

 

A detailed description of an extension to the PostScript language which allows the description of PDF features not found in standard PostScript. Accessibility API Reference. Acrobat API Reference. Latest : PDF Reference 1. PDF Reference 1. Acrobat SDK docs. These deprecated docs do not contain the latest information, and references to Unix, LiveCycle, and legacy features have not been removed.

Acrobat always attempts to convert the result of an execution into text so that it can be displayed. Sometimes the result of an operation is not as clean or obvious as a number. Let's try something that doesn't have such a well-defined result. Enter the following line in the Console Window and run it:. This calculation has an obvious mathematical error, but Acrobat JavaScript doesn't display an error message.

Instead, as shown in Figure 5 , it displays the word "Infinity. It is much easier to find this kind of issue by executing individual lines in the Console Window where you can see the results immediately, than it is to debug it from a field-calculation script. The next line of example code is something that might be used in a real script. It assigns a simple addition to a variable named 'sum'. As shown in Figure 6, the return value from this line of code is "undefined.

The calculation is executed and applied to the declared variable, sum. However, the first and primary operation on the line is the variable declaration, so this is the operation that returns a value to the Console Window. Unfortunately, variable declarations do not return a value.

To overcome this small issue, the Console widow displays "undefined. Anything that doesn't exist to the JavaScript environment is "undefined. This action executes just the selected text. This technique of selecting parts of the code for execution is also useful for executing multiple lines of code. So far we've talked about executing code in the Console Window for testing and debugging, but there is no reason to restrict our usage to this limited theme.

Immediate Mode means that anything entered into this window is executed directly by the JavaScript engine. We can use it anytime we want to execute code for any purpose. Two uses for the Console Window besides code testing that immediately come to mind are automation and analysis. There are several functions in Acrobat for manipulating and for acquiring information from PDFs and Acrobat. For operations with a user interface button or menu item, the main advantage of using JavaScript is greater flexibility, since JavaScript functions typically provide more options than the user interface equivalent.

For example, suppose you wanted to know the exact border color of a text field so you could use the same color in another location. Assuming the current document has a field with the correct name on it, the following code displays the raw color value in the Console Window:. The result of this operation is a color array. Remember, Acrobat attempts to convert all results into text.

Arrays are converted to text by converting each individual array element into a text string, so the result would look something like the following line when it is displayed in the Console Window. This is an example of document analysis with JavaScript. We've just found out something that would have taken us just a little more effort to find out using the Acrobat property dialogs, and the information is in a very usable format.

We can easily copy and paste this information to accomplish some other purpose, for example applying the color to another field with this line of code:. Suppose a document needs to be checked for branding purposes, i. The following code uses a simple loop to display this color info in the Console Window for manual inspection:. Because of the loop, this code cannot be executed one line at a time.

It has to be done all at once. Notice that in the loop there is a function called console. It's in the fourth line. This function writes text to the Console Window and it will be discussed in the next section. Here's an example of a function that does not have an easy equivalent on the regular Acrobat menus and toolbars. Enter the following line into the Console Window and run it:. Acrobat will create a new, blank PDF document. This is perfect for trying out new ideas before applying them to a working document.

The results of this operation are shown in Figure 7 below. Note that yet again, the result is something different. The result shown in Figure 7 tells us the type of object created. Add an action to bookmarks, form fields, buttons, or clips. Do one of the following:. Using the Hand tool, right-click the bookmark, and choose Properties.

Click the Actions tab. Add actions to page thumbnails. Click the Page Thumbnails button on the left. Choose an action from the Select Action menu, and click Add. Action types. You can assign the following actions to links, bookmarks, pages, media clips, and form fields:. Executes a specified menu command as the action. Jumps to the specified 3D view.

Jumps to the specified destination in the current document or in another document. Brings in form data from another file, and places it in the active form. Open A File. Follows an article thread in the active document or in another PDF document. Runs the specified JavaScript. Sends the form data to the specified URL.

Trigger types. You can use the following triggers for media clips and form fields not links or bookmarks :. When the page containing the media clip is moved out of view. When the page containing the media clip becomes the current page. When a user leaves the page that contains the media clip. Mouse Down. Mouse Enter. When the pointer enters the field or play area. Mouse Exit. When the pointer exits the field or play area. When the link area receives focus, either through a mouse action or tabbing.

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Ask Question. Asked 6 months ago. Modified 5 months ago. Viewed times. What have you tried? I looked around in the Acrobat menu. What make you believe it is possible? Have you inserted your script into a PDF? Improve this question.

 

Add debug JavaScript, Adobe Acrobat - What's New

 

Adobe Acrobat is a family of application software and Web services developed by Adobe Inc. The basic Acrobat Reader, available for several desktop and mobile platforms, is freeware ; it supports viewing, printing and annotating of PDF files. The commercial proprietary Acrobat, available for Microsoft Windows and macOS only, can also create, edit, convert, digitally sign , encrypt, export and publish PDF files.

It can import popular document and image formats and save them as PDF. It's also possible to import a scanner 's output, a website, or the contents of the Windows clipboard. Because of the nature of the PDF, however, once a PDF document is created, its natural organization and flow cannot be meaningfully modified. In other words, Adobe Acrobat is able to modify the contents of paragraphs and images, but doing so does not repaginate the whole document to accommodate for a longer or shorter document.

Adobe Acrobat was launched in and had to compete with other products and proprietary formats that aimed to create digital documents:. Adobe has renamed the Acrobat products several times, in addition to merging, splitting and discontinuing them. Over time, "Acrobat Reader" became "Reader". Between versions 3 and 5, Acrobat did not have several editions. Unlike most other Adobe products, such as members of Adobe Creative Suite family, the Acrobat products do not have icons that display two letters on a colored rectangle.

In April , Adobe introduced the " Document Cloud " branding alongside its Creative Cloud to signify its adoption of the cloud storage and the software as a service model. Programs under this branding received a "DC" suffix. In addition, "Reader" was renamed back to "Acrobat Reader". Version numbers are now identified by the last two digits of the year of major release, and the month and year is specified; the previous version was 12, but examples of the DC Document Cloud Acrobat product family versions are DC June , version The table below contains some of the supported file formats that can be opened or accessed in Adobe Acrobat.

Arabic and Hebrew versions are available from WinSoft International, [38] Adobe Systems ' internationalization and localization partner. Before Adobe Acrobat DC, separate Arabic and Hebrew versions were developed specifically for these languages, which are normally written right-to-left.

These versions include special TouchUp properties to manage digits, ligatures option and paragraph direction in right-to-left Middle Eastern scripts such as Arabic, Hebrew, and Persian, as well as standard left-to-right Indian scripts such as Devanagari and Gujarati.

The Web Capture feature can convert single web pages or entire web sites into PDF files, while preserving the content's original text encoding. Acrobat can also copy Arabic and Hebrew text to the system clipboard in its original encoding; if the target application is also compatible with the text encoding, then the text will appear in the correct script. A comprehensive list of security bulletins for most Adobe products and related versions is published on their Security bulletins and advisories page and in other related venues.

From Version 3. This functionality allows a PDF document creator to include code which executes when the document is read. Malicious PDF files that attempt to attack security vulnerabilities can be attached to links on web pages or distributed as email attachments. While JavaScript is designed without direct access to the file system to make it "safe", vulnerabilities have been reported for abuses such as distributing malicious code by Acrobat programs. Since at least version 6, JavaScript can be disabled using the preferences menu [45] and embedded URLs that are launched are intercepted by a security warning dialog box to either allow or block the website from activating.

These vulnerabilities could cause the application to crash and potentially allow an attacker to take control of the affected system. There have been reports of these vulnerabilities being exploited to trick Windows users into clicking on a malicious PDF file delivered in an email message.

Adobe recommended users update their product installations. These updates address critical vulnerabilities that could potentially allow an attacker to take control of the affected system. From Wikipedia, the free encyclopedia. Main article: Adobe Acrobat version history. Old logos of Acrobat programs and services. This section possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed.

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International Data Group. Retrieved 28 March IDG News Service. Acrobat Help. Retrieved 27 June Retrieved 20 October September 23, Retrieved 20 August Archived from the original on Archived from the original on 31 August Retrieved 4 December Retrieved 20 February McAfee Avert Labs. February Archived from the original PDF on 15 February Retrieved 9 May McAfee Labs. December Archived from the original PDF on 2 June CBS Interactive. Ziff Davis Enterprise Holdings Inc.

Retrieved 5 August David Kierznowski, a penetration testing expert specializing in Web application testing, has released proof-of-concept code and rigged PDF files to demonstrate how the Adobe Reader program could be used to initiate attacks without any user action.

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