C6 Messenger Downloader — PDF malware analysis

Static analysis result for SHA-256 fd51e3523122e07f…

MALICIOUS

PDF

480.7 KB Created: 2011-05-17 09:18:16 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 8b834bc369c975daa0851a602733190d SHA-1: 74847ed5086276d28c99c4b4404a62838f449c3c SHA-256: fd51e3523122e07f91bbf924e6529d344a769d0685f8e655dc668dbfe1862458
60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 90%

The critical heuristic firing for CVE_2008_2551 indicates the file is designed to exploit this vulnerability. The embedded URL points to a potential second-stage payload, 'system.exe', hosted on 'artisanballoonz.com'. This suggests the PDF's primary purpose is to act as a downloader for further malicious activity.

Heuristics 2

  • C6 Messenger DownloaderActiveX exploit critical CVE exact CVE_2008_2551
    PDF stream bytes contain HTML/ActiveX content configuring the vulnerable C6 Messenger DownloaderActiveX control with propDownloadUrl and propPostDownloadAction=run. This is the published exploit shape for CVE-2008-2551.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://artisanballoonz.com/system/system.exe
    • http://c6.community.alice.it/download/DownloaderActiveX.cab#Version=1,0,0,1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00000d6c.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD6C 73272 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.