C6 Messenger Downloader PDF malware analysis — malicious · f0e18728c0081653

MALICIOUS

PDF

1.16 MB Created: 2011-04-27 02:28:03 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: ce39d717e0d5beb9b6df68f9f47788c4 SHA-1: aacc6c54d76152677723bc1a77c8ad596148a575 SHA-256: f0e18728c0081653dbec2673baa571013044718ca758aac2f2e3718935f4d3a4

60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 95%

The PDF file contains a heuristic firing for the CVE_2008_2551 exploit, indicating it attempts to download and execute a payload. The embedded URL points to a potential executable, 'system.exe', which is highly suspicious. The exploit targets older versions of Adobe Reader, suggesting a drive-by download attack vector.

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_003_off00000a8f.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xA8F	73272 bytes

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