Malicious PDF — malware analysis report

Static analysis result for SHA-256 da82211e4b131bea…

MALICIOUS

PDF

607.3 KB Created: 2011-07-08 01:10:24 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 25957ac034500341e1c50f8dffd06066 SHA-1: f9fe3bf71fef78f77c99e9d9d0289787af9d9b4a SHA-256: da82211e4b131bea2445fd0aa7a0846222cf337c040efe9a8bbb3526d2531caa
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 points to the secondary payload. The PDF structure itself does not contain readable content, but the exploit and the suspicious 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_002_off00000688.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x688 73272 bytes