Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdc1f456e254c4f1…

MALICIOUS

PDF

49.4 KB Created: 2011-05-26 13:32:45 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: e0fb6f6361bcdd6f80ecb388626f8d2b SHA-1: dff2197d3f15b528f2ee97b29a1a185f1ecb57e6 SHA-256: bdc1f456e254c4f1e597fac98a70c240146faa13ebed2a9448476d2bf80c525a
62 Risk Score

Malware Insights

The PDF contains a marker indicating the CVE-2008-2551 DownloaderActiveX exploit. It also embeds a URL that points to a potential executable payload. The document body is unreadable, but the exploit and the executable URL strongly suggest a download-and-execute 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_off0000070b.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x70B 73272 bytes

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