Malicious PDF — malware analysis report

Static analysis result for SHA-256 91e09446c64f98d2…

MALICIOUS

PDF

54.5 KB Created: 2011-05-26 12:49:44 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: d3d1b10ff032e541cd4c0155f1496b9c SHA-1: c9fdeafc15be7ccc4d27527f86f39aabe897fa28 SHA-256: 91e09446c64f98d2c614cd2314ed3131c9733c7136e7060a7e5155546726b6c7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains a critical heuristic firing for CVE_2008_2551, indicating it exploits a vulnerability in the Messenger ActiveX control. The embedded URL points to a potential executable download. While most extracted URLs are benign, one points to 'artisanballoonz.com/system/system.exe', which is highly suspicious and likely the secondary payload. The exploit likely facilitates the download and execution of this payload.

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=1024978
    • http://www.farsnews.com/newstext.php?nn=8901060276
    • http://www.irna.ir/View/FullStory/?NewsId=1024982
    • http://www.irna.ir/View/FullStory/?NewsId=1024985
    • http://www.farsnews.com/newstext.php?nn=8901060017
    • http://www.irna.ir/View/FullStory/?NewsId=1024984
    • http://www.farsnews.com/newstext.php?nn=8901060014
    • http://www.irna.ir/View/FullStory/?NewsId=1024974
    • http://www.farsnews.com/newstext.php?nn=8901060112
    • 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_off00001b84.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1B84 73272 bytes

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