Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dc6a3f7ef2fa702…

MALICIOUS

PDF

136.5 KB Created: 2011-05-28 20:21:50 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: cf47fcd527bfcada7c36c811c8448100 SHA-1: fb3ac1023dd484264e3d3a386b0a63bb464e1208 SHA-256: 3dc6a3f7ef2fa702096c8056dbab05bcf71b4ee6ba00f3bd8fb2fa80fe658c86
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The critical heuristic firing for CVE_2008_2551 indicates the sample is designed to exploit a vulnerability in PDF readers. The embedded URL points to a potential second-stage payload, 'system.exe', which is highly suspicious. The benign reputation of the other URL suggests it is likely a decoy or unrelated.

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_off000003dc.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3DC 73272 bytes

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