Malicious PDF — malware analysis report

Static analysis result for SHA-256 5904d63b4bde3fdf…

MALICIOUS

PDF

54.5 KB Created: 2011-05-17 08:43:47 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 98756c3da69115f65bed4d649f12271c SHA-1: 0961fd6892a2e4de5b37435cc8fac202c7e29ced SHA-256: 5904d63b4bde3fdf94408bac35815bee29213138f308b7773d14c19070534e82
62 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for the CVE-2008-2551 exploit, which is known to download and execute arbitrary code. The embedded URL points to a CAB file that likely contains the exploit and a secondary payload. The heuristic also indicates a downloader ActiveX exploit. The presence of the `system.exe` URL suggests a further download and execution stage.

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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