C6 Messenger Downloader — PDF malware analysis

Static analysis result for SHA-256 e52ee2fed91892b1…

MALICIOUS

PDF

797.8 KB Created: 2011-07-07 23:12:48 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 158122dbb1bf178d60d048e9ce58124b SHA-1: ac1b1efca2d6d103480fed8c5b59316c41e357f6 SHA-256: e52ee2fed91892b1857897ffde6f349c48b7019607b02e555d1871b309359e39
60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 90%

The PDF contains a critical heuristic firing for CVE_2008_2551, indicating an exploit for C6 Messenger Downloader. This exploit likely targets a vulnerability to download a secondary payload from the embedded URL http://artisanballoonz.com/system/system.exe. The file is a PDF, and the heuristic suggests it's designed to deliver the DownloaderActiveX.cab, which in turn likely executes the system.exe payload.

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_002_off0000095d.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x95D 73272 bytes

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