Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8d06a237fdf17c0…

MALICIOUS

PDF

946.5 KB Created: 2011-04-27 02:31:10 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 60b48a18ecabd7379e257ce917c8f84c SHA-1: f0cb605f8c9155a5414c4a9b128eaecb2a84e6b2 SHA-256: a8d06a237fdf17c07bf4a827a9e821a41cdfb0eb75548c053aa20cb6a023c44b
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for CVE_2008_2551, indicating an exploit for the DownloaderActiveX vulnerability. This exploit likely targets the embedded URL http://artisanballoonz.com/system/system.exe to download and execute a secondary 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_003_off0000123d.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x123D 73272 bytes