C6 Messenger Downloader — PDF malware analysis

Static analysis result for SHA-256 b00bd9339e9b3327…

MALICIOUS

PDF

54.2 KB Created: 2011-06-22 16:25:41 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 21c424918d972e81b63a767515da5458 SHA-1: e802350436b1bf189f90b985c65e7c921812491d SHA-256: b00bd9339e9b3327e154d34aaa49a755708af84564ba78e903c32113f5e0b903
64 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 95%

MITRE ATT&CK
T1204.002 Malicious File

The sample is a PDF file that contains a critical heuristic firing for the CVE_2008_2551 exploit, which is known to be used by the C6 Messenger Downloader. This exploit likely facilitates the download and execution of a second-stage payload from the embedded URL. The presence of the DownloaderActiveX.cab URL and a suspicious system.exe URL further supports this conclusion.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://www.afghanpaper.com/nbody.php?id=6922
    • http://artisanballoonz.com/system/system.exe
    • http://www.irna.ir/View/FullStory/?NewsId=1033919
    • http://www.irna.ir/View/FullStory/?NewsId=1035794
    • http://www.irna.ir/View/FullStory/?NewsId=1035878
    • http://www.presstv.ir/Persian.aspx?id=8945
    • http://www.presstv.ir/Persian.aspx?id=8944
    • 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_004_off00001a14.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A14 73272 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.