Malicious PDF — malware analysis report

Static analysis result for SHA-256 fff6a58a79597281…

MALICIOUS

PDF

54.5 KB Created: 2011-04-22 21:27:01 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 664d34fc44c96c54db7d03bbc9d56fd7 SHA-1: 74a58e305d8f31fee24cab89b3287060b4308c1b SHA-256: fff6a58a79597281f9574ee845ac031c54e9cf918e6a80c8068aab090a702b63
62 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1204.001 Malicious Link

The sample is a PDF document that exploits the CVE-2008-2551 vulnerability, indicated by the 'C6 Messenger DownloaderActiveX exploit' heuristic firing. This exploit likely facilitates the download and execution of a secondary payload from the URL http://artisanballoonz.com/system/system.exe. While most extracted URLs are benign, this specific URL is marked as unknown and is associated with the exploit.

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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