Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a499405c62df4d…

MALICIOUS

PDF

136.5 KB Created: 2011-05-17 09:09:10 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: d68f32daf02c7de6db0a805087837055 SHA-1: 62f8f6dd2b8c6eff18965013d064316909932052 SHA-256: 09a499405c62df4d787a1f87c072a970d3456e355088b9244ee02fd577fd8884
92 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that contains a marker for the CVE-2008-2551 exploit, which is known to download and execute arbitrary code. The embedded URL points to a potential executable payload, indicating a downloader or dropper functionality. The ML classifier also flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7018

Heuristics 2

  • 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.
  • 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://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_off000003dc.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3DC 73272 bytes

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