C6 Messenger Downloader — PDF malware analysis

Static analysis result for SHA-256 5e80539710e05b37…

MALICIOUS

PDF

240.2 KB Created: 2011-06-22 17:30:24 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 6c288aabf9a59a567cf3e5815f1d2005 SHA-1: 79ec8afc9e50a2d1c72d9d8ff7f983ecaf0b2a55 SHA-256: 5e80539710e05b374860a6dd267500a03ac8978bde73fb867bba104fcf456f0b
92 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 95%

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF contains a marker for the C6 Messenger DownloaderActiveX exploit (CVE-2008-2551), indicating it's designed to exploit this vulnerability. The embedded URL 'http://artisanballoonz.com/system/system.exe' is highly suspicious and likely serves as the download location for a malicious executable. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9252

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_off000003be.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3BE 73272 bytes

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