Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf159d59310ec5c…

MALICIOUS

PDF

49.1 KB Created: 2011-04-16 14:09:20 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 1d054ec17688db531e031066d6ab413b SHA-1: 595f9841617baf3d4539a7ef5ab703ccfd379198 SHA-256: eaf159d59310ec5c0a12e12affce76fe46a9884325d443c99a33ccc53a7534cd
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF document that contains a critical heuristic firing for CVE-2008-2551, indicating exploitation of a vulnerability related to C6 Messenger DownloaderActiveX. The embedded URL http://artisanballoonz.com/system/system.exe is likely the download location for the malicious payload. The document body is heavily obfuscated and does not provide further clues.

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_off000005fd.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5FD 73272 bytes

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