Threat Description

Exploit: ​W32/PDF-URI.L


Category: Malware
Type: Exploit
Platform: W32
Date Discovered: October 29, 2007
Aliases: Exploit:​W32/PDF-URI.L


Exploit:W32/PDF-URI.L is detection of a malicious PDF file that is being heavily spammed through e-mail and it appears as an attachment.

This malicious PDF file takes advantage of a vulnerability on the URI handling of PDF files. This vulnerability affects IE7, Adobe Acrobat, and Adobe Reader on some platforms.

Users should update their Adobe Reader installations. See the details section for information.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details


This malware disables the Windows Firewall by issuing the following command:

  • netsh firewall set opmode mode=DISABLE

Then it downloads the a file from the following FTP site and executes it:

  •[REMOVED].exeDetected as Trojan-Downloader.Win32.Small.glc

The vulnerability reference is: CVE-2007-5020.

Microsoft's Advisory


Windows XP or Windows 2003 (Vista users are not affected) with Internet Explorer 7 installed.

Affected Software Versions

Adobe Reader 8.1 and earlier, Adobe Reader 7.0.9 and earlier. Adobe Acrobat Professional, 3D and Standard 8.1 and earlier versions, Adobe Acrobat Professional, Standard, 3D and Elements 7.0.9 and earlier.

Software Updates

There is an update available from Adobe to resolve the vulnerability:


Detection Type: PC
Database: 2007-10-29_06


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