C6 Messenger Downloader — PDF malware analysis

Static analysis result for SHA-256 06325a56f91de9b7…

MALICIOUS

PDF

53.6 KB Created: 2011-05-17 08:58:32 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 56ebe5a013b3ad0f69910520e891950a SHA-1: 251a0f94124a6ac21d96dbc7b290c75b56cdcccd SHA-256: 06325a56f91de9b79e1663182f1efbbb33a068372194705f47554b5b5bcdac5c
94 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 90%

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains a critical heuristic firing for the CVE-2008-2551 exploit, which is known to download and execute payloads. The embedded URL points to a CAB file which likely contains the exploit and a secondary executable, 'system.exe', hosted on 'artisanballoonz.com'. This indicates a downloader or dropper functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5458

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://artisanballoonz.com/system/system.exe
    • http://www.irna.ir/View/FullStory/?NewsId=843295
    • http://www.farsnews.com/newstext.php?nn=8809231839
    • http://www.irna.ir/View/FullStory/?NewsId=842976
    • http://www.irna.ir/View/FullStory/?NewsId=840723
    • http://www.irna.ir/View/FullStory/?NewsId=843385
    • http://www.irna.ir/View/FullStory/?NewsId=842924
    • http://www.irna.ir/View/FullStory/?NewsId=842976������
    • http://www.irna.ir/View/FullStory/?NewsId=840723���������������������
    • http://www.irna.ir/View/FullStory/?NewsId=843385���������
    • 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_off00001828.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1828 73272 bytes

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