Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0cbb757f750dceb…

MALICIOUS

PDF

498.6 KB Created: 2011-05-26 13:32:05 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: fd337caa702557ac42c35433e079a997 SHA-1: aa52441921bd91a235d3301aa66f62f52d3dec2f SHA-256: b0cbb757f750dcebf64b9f198212d0df8dc888a7a88c254800cac4cc9b802992
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF contains a marker for the CVE-2008-2551 exploit, which is known to download and execute arbitrary code. The embedded URL 'http://artisanballoonz.com/system/system.exe' likely points to the secondary payload. The document body was unreadable, but the heuristic firing is sufficient to determine the attack pattern.

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_off0000042a.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42A 73272 bytes

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