Malicious PDF — malware analysis report

Static analysis result for SHA-256 8292761d5f2d0ea2…

MALICIOUS

PDF

51.5 KB Created: 2011-07-08 01:12:45 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 6a51d50aa35286ae87f56d9863a3c23b SHA-1: 5a7db07bea6b15b3fbe03375af98790c16bd928d SHA-256: 8292761d5f2d0ea2dc83dc6cad4237ca49b7391b5d3d19e2a2b18de2b36144ff
62 Risk Score

Malware Insights

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

The sample is a PDF document that contains a critical heuristic firing for the CVE_2008_2551 exploit. This exploit is known to download and execute arbitrary files. The embedded URL 'http://artisanballoonz.com/system/system.exe' is highly suspicious and likely the secondary payload. The document body contains numerous benign URLs, likely for obfuscation.

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=840728
    • http://www.farsnews.com/newstext.php?nn=8809221138
    • http://www.irna.ir/View/FullStory/?NewsId=839237
    • http://www.farsnews.com/newstext.php?nn=8809221807
    • 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_001_off00000fe2.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFE2 73272 bytes

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