Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad0cddb05ac15e38…

MALICIOUS

PDF

52.2 KB Created: 2011-05-17 09:10:40 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 294dd756ce3a79e7aaa1d9dca572de82 SHA-1: 50f170b517d36b0e05e1eabedc2db8bcc52d16b2 SHA-256: ad0cddb05ac15e385fc3ab0c69052a69d8fbca217ac898c4940d6937f3170bd6
64 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 DownloaderActiveX exploit. This exploit is designed to download and execute a secondary payload. The presence of an unknown reputation URL, http://artisanballoonz.com/system/system.exe, strongly suggests this is the intended payload. The exploit likely facilitates the download and execution of this file, leading to a compromise.

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=889420
    • http://www.irna.ir/View/FullStory/?NewsId=889345
    • http://www.mehrnews.com/fa/newsdetail.aspx?NewsID=1014879
    • http://www.mehrnews.com/fa/newsdetail.aspx?NewsID=1015017
    • 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_off000012d5.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12D5 73272 bytes

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