Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d0ec1f4a937eda…

MALICIOUS

PDF

54.0 KB Created: 2011-05-26 13:23:12 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: cd91f8a7d0b7f5763e757819f98ad2b7 SHA-1: c2d36f231a1205fed0dd6629ad91962a7d601c58 SHA-256: 36d0ec1f4a937eda60ed7c220a22c885549dbb7f3f8aeca21ff4a84d2ce372af
62 Risk Score

Malware Insights

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

The sample is a PDF file that contains a critical heuristic firing for CVE_2008_2551, indicating it exploits a vulnerability to download a secondary payload. The embedded URL 'http://artisanballoonz.com/system/system.exe' is highly suspicious and likely the location of the payload. The presence of a DownloaderActiveX exploit further supports the download and execution attack pattern.

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=831410
    • http://www.irna.ir/View/FullStory/?NewsId=831244
    • http://www.irna.ir/View/FullStory/?NewsId=832138
    • http://www.irna.ir/View/FullStory/?NewsId=833016
    • http://www.farsnews.com/newstext.php?nn=8809171838
    • http://www.irna.ir/View/FullStory/?NewsId=830786
    • http://www.presstv.ir/Persian.aspx?id=6413
    • 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_off000019a1.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x19A1 73272 bytes

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