Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fa7affcc06626c1…

MALICIOUS

PDF

359.1 KB Created: 2011-05-26 14:40:30 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 58a0ec329369046be11d575c22a9b077 SHA-1: 6bbfc5ee88d8128ea774e863902a089f1d75cb44 SHA-256: 2fa7affcc06626c19f0610c73bd908e715ca0e396b6b3e358e99b5f216dc9315
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample is a PDF document that contains a heuristic firing for CVE_2008_2551, indicating an exploit for C6 Messenger DownloaderActiveX. This exploit likely facilitates the download and execution of a secondary payload from the URL http://artisanballoonz.com/system/system.exe. The embedded URL http://c6.community.alice.it/download/DownloaderActiveX.cab#Version=1,0,0,1 was confirmed benign and is likely related to the exploit's functionality.

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_013_off000034d0.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34D0 73272 bytes