Malicious PDF — malware analysis report

Static analysis result for SHA-256 da61a01f816b307e…

MALICIOUS

PDF

313.3 KB Created: 2011-07-07 21:26:42 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 2d5ff98d3b9ce170b9fe3d61da6c3dfa SHA-1: b34e46eed71b33a268adc1b8506d4f40478167c7 SHA-256: da61a01f816b307ec714f28fa2ed8a78d027c8f9d8af1dea8df30af65019f4cc
62 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF file contains a critical heuristic indicating the CVE-2008-2551 exploit, which is known to download and execute secondary payloads. The embedded URL http://artisanballoonz.com/system/system.exe is highly suspicious and likely serves as the download location for the malicious payload. The document body was unreadable, but the exploit and URL are sufficient indicators.

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_off000004f3.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F3 73272 bytes