Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c8925871c0ba42…

MALICIOUS

PDF

58.0 KB Created: 2011-05-26 13:22:14 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: f45d0826a3cbc00cc9d1fee06cfcbaff SHA-1: d2ca2a8f745939b2b8f8598acf49b75085cbdb8e SHA-256: e5c8925871c0ba42ef4740bf38131b44f4a0aae200fb7751d15fea65cf2dce2b
62 Risk Score

Malware Insights

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

The sample is a PDF document that contains a heuristic firing for the CVE-2008-2551 C6 Messenger DownloaderActiveX exploit. This exploit is known to download and execute secondary payloads. One of the extracted URLs, http://artisanballoonz.com/system/system.exe, is highly suspicious and likely the secondary payload. The other URLs appear to be benign news articles.

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://www.mehrnews.ir/NewsPrint.aspx?NewsID=1060633
    • http://artisanballoonz.com/system/system.exe
    • http://www.irna.ir/View/FullStory/?NewsId=1044676
    • http://www.irna.ir/View/FullStory/?NewsId=1044583
    • http://www.irna.ir/View/FullStory/?NewsId=1044772
    • http://www.farsnews.com/newstext.php?nn=8901200507
    • http://www.irna.ir/View/FullStory/?NewsId=1043727
    • http://www.farsnews.com/newstext.php?nn=8901200651
    • http://www.presstv.ir/Persian.aspx?id=9047
    • http://www.presstv.ir/Persian.aspx?id=9046
    • 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_007_off000028ac.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x28AC 73272 bytes

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