Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36bd3b175b1958d…

MALICIOUS

PDF

296.8 KB Created: 2011-04-22 21:21:08 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: ef057d9d3982cdaab96eb6d013de368d SHA-1: f398e177dd9f3f886599c0b546df0ce24b781974 SHA-256: b36bd3b175b1958d3dcd7f53efb14a24bc2e1af92613353403cd6e4daa0b4f40
62 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF contains a critical heuristic firing for CVE_2008_2551, indicating it exploits a known vulnerability to download a secondary payload. The embedded URL http://artisanballoonz.com/system/system.exe is highly suspicious and likely hosts the malicious executable. The document body was unreadable, but the exploit and URL strongly suggest a downloader 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_off0000042f.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42F 73272 bytes