C6 Messenger Downloader — PDF malware analysis

Static analysis result for SHA-256 3d9947d25b4545c6…

MALICIOUS

PDF

50.5 KB Created: 2011-05-26 14:33:00 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 99507c79a513da2afbbf8af31c9e12af SHA-1: 71c82bc3aba43f77e93985cdb1f20683d835c670 SHA-256: 3d9947d25b4545c661cc4e2e81b169e390f31135d52b7b9477592cf406950bbf
60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 90%

The PDF file contains a critical heuristic firing for CVE_2008_2551, indicating it exploits a vulnerability to download a payload. The embedded URL points to a CAB file, which likely contains the DownloaderActiveX exploit. A second URL, http://artisanballoonz.com/system/system.exe, is also present and likely serves as the download location for the second-stage 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_001_off00000c05.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC05 73272 bytes

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