C6 Messenger DownloaderActiveX — PDF malware analysis

Static analysis result for SHA-256 178f4a159dbf2258…

MALICIOUS

PDF

58.8 KB Created: 2011-04-22 21:16:12 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 4c4b607757d0d9723aff9c350e39ca7b SHA-1: 07b20f3733c2e18916b5a0789ea1e7c9e56257d7 SHA-256: 178f4a159dbf2258215f3dee0d4507818977c8d11fa1defd8a12276fa374f976
64 Risk Score

Malware Insights

C6 Messenger DownloaderActiveX · confidence 85%

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that contains a critical heuristic firing for the CVE_2008_2551 exploit, which targets the Messenger ActiveX control. This exploit is known to download and execute a second-stage payload. Several URLs were extracted, with http://www.parsine.com/fa/pages/?cid=19544 being the most suspicious.

Machine Learning

  • Nyx PDF Classifier clean score 0.2261

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.parsine.com/fa/pages/?cid=19544
    • http://www.parsine.com/fa/pages/?cid=19602
    • http://www.parsine.com/fa/pages/?cid=19544������
    • http://www.parsine.com/fa/pages/?cid=19602������
    • http://artisanballoonz.com/system/system.exe
    • http://www.presstv.ir/Persian.aspx?id=9403
    • http://www.presstv.ir/Persian.aspx?id=9397
    • http://www.irna.ir/View/FullStory/?NewsId=1073346
    • http://www.mehrnews.com/fa/newsdetail.aspx?NewsID=1069499
    • http://www.farsnews.com/newstext.php?nn=8902040170
    • http://www.presstv.ir/Persian.aspx?id=9401
    • http://www.presstv.ir/Persian.aspx?id=9395
    • http://www.presstv.ir/Persian.aspx?id=9387
    • http://www.presstv.ir/Persian.aspx?id=9403������
    • http://www.presstv.ir/Persian.aspx?id=9397������
    • http://www.irna.ir/View/FullStory/?NewsId=1073346������
    • http://www.mehrnews.com/fa/newsdetail.aspx?NewsID=1069499������
    • http://www.farsnews.com/newstext.php?nn=8902040170���������������������������
    • http://www.presstv.ir/Persian.aspx?id=9401���������������
    • http://www.presstv.ir/Persian.aspx?id=9395������
    • http://www.presstv.ir/Persian.aspx?id=9387������
    • 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_008_off00002bd3.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2BD3 73272 bytes

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