Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c56ccf0d9a292d…

MALICIOUS

PDF

53.3 KB Created: 2011-05-17 09:13:09 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: 6460a5d71e5a8b69b52cda503db2c0f9 SHA-1: 2d7f04d1bcf4c9eb8ec604359b48c94d553a594a SHA-256: 66c56ccf0d9a292d30c87bc96bcc39a2ba39e04a80aa5fbdbdddb6bb19f12d72
64 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that contains an exploit for CVE-2008-2551, a known vulnerability that allows for the execution of arbitrary code. The exploit targets a DownloaderActiveX component and is configured to download a second-stage payload from 'http://artisanballoonz.com/system/system.exe'. This indicates a downloader or dropper functionality, aiming to execute further malicious code.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4916

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=1026122
    • http://www.farsnews.com/newstext.php?nn=8901070084
    • http://www.farsnews.com/newstext.php?nn=8901070246
    • http://www.farsnews.com/newstext.php?nn=8901070268
    • http://www.presstv.ir/Persian.aspx?id=8803
    • http://www.presstv.ir/Persian.aspx?id=8801
    • http://www.presstv.ir/Persian.aspx?id=8802
    • http://www.irna.ir/View/FullStory/?NewsId=1026122������
    • http://www.farsnews.com/newstext.php?nn=8901070084������
    • http://www.farsnews.com/newstext.php?nn=8901070268������������������������������
    • http://www.presstv.ir/Persian.aspx?id=8802������
    • 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_off000016cc.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16CC 73272 bytes

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