Threat Description



Aliases: Exploit:​W32/PDF-URI.L
Category: Malware
Type: Exploit
Platform: W32


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 Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.

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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