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F-Secure Malware Information Pages: Exploit:W32/PDF-URI.L
[Summary] | [Detailed Description] | [Detection]

Name : Exploit:W32/PDF-URI.L
Alias:Exploit:Win32/RdrJmp.A, Exploit:W32/AdobeReader.L, Exploit.Win32.PDF-URI.l, Bloodhound.Exploit.163
Type:Exploit
Category:Malware
Platform:W32
Date of Discovery:October 29, 2007
Radar

Summary
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.
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Detailed Description
Actions

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:

  • ftp://81.95.146.181/[REMOVED].exe
    Detected as Trojan-Downloader.Win32.Small.glc

The vulnerability reference is: CVE-2007-5020.

Microsoft's Advisory.

Platforms

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:
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Detection

F-Secure Anti-Virus detects this malware with the following updates:

[FSAV_Database_Version]

Version = 2007-10-29_06.
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F-Secure Corporation

Last Modified: October 30, 2007