C6 Messenger Downloader PDF malware analysis — malicious · c6ccb5b06c780c9b

MALICIOUS

PDF

284.4 KB Created: 2011-05-17 09:17:10 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: e4d569bad8e56e887d1159b0bfa5416a SHA-1: f019a25b296cf223a4b9dd4576ddcfa5ce20e223 SHA-256: c6ccb5b06c780c9b57d490e1256e2de8a817ac32680fc41c9ff0861ec1f9876f

62 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 95%

The PDF file contains a marker for the CVE-2008-2551 exploit, which is known to download and execute arbitrary files. The embedded URL http://artisanballoonz.com/system/system.exe likely hosts the secondary payload. The file is identified as a C6 Messenger Downloader based on the exploit used.

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_off000003d4.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3D4	73272 bytes

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