C6 Messenger Downloader PDF malware analysis — malicious · b4eac70cd2a2f61f

MALICIOUS

PDF

49.4 KB Created: 2011-07-07 20:36:17 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 888f1948d9125ca389575cf5b9b1365d SHA-1: d8a680e08ec47dc16f8474d29645a5aefa7f57db SHA-256: b4eac70cd2a2f61f755ba0e1609185111c5822b48463176198a33a8b27d89fe1

60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 95%

The PDF file contains a marker indicating the CVE-2008-2551 exploit, which is known to download and execute payloads. The embedded URL 'http://artisanballoonz.com/system/system.exe' is highly suspicious and likely serves as the secondary payload. The file type and exploit indicate a downloader functionality.

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.

Filename	Kind	Source	Size
`stream_001_off00000723.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x723	73272 bytes

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