Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde4cc02c98c0e3d…

MALICIOUS

PDF

607.3 KB Created: 2011-04-22 21:52:13 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))
MD5: adcb3b56e50df16ecba22c228e27ada0 SHA-1: 58542e707f50435bc1da66cc1d93f37bf943e52c SHA-256: bde4cc02c98c0e3dc3b6f6f7b9c5916f2941f242dd58ebd2c785f27c9806fa3c
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF contains a marker for the CVE-2008-2551 C6 Messenger DownloaderActiveX exploit. This exploit is designed to download and execute a secondary payload from a specified URL. The embedded URL 'http://artisanballoonz.com/system/system.exe' is highly suspicious and likely hosts the second-stage malware.

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_002_off00000688.bin
80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x688 73272 bytes

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