Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba7f30248bb1b35…

MALICIOUS

PDF

338.4 KB Created: 2011-05-26 14:40:48 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: fb37f6ed6540d9417822b2a573445bb5 SHA-1: b1fc60cc06e86f2252ca70604e19ded3a2f0f89b SHA-256: 2ba7f30248bb1b35aef83dc1fb37968e1facb7b49c6704610f046aef76e2430f
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF contains a critical heuristic firing for CVE-2008-2551, indicating an exploit for the C6 Messenger DownloaderActiveX. This exploit likely facilitates the download of a secondary payload, as evidenced by the embedded URL pointing to 'artisanballoonz.com/system/system.exe'. The document body is heavily obfuscated and does not provide direct clues to the user-facing lure.

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_off000004a4.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4 73272 bytes

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