C6 Messenger Downloader PDF malware analysis — malicious · 9ac8acbd51f552a8

MALICIOUS

PDF

52.0 KB Created: 2011-06-22 18:33:00 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 0b2bcc26d19ca06a4ad0c60d43ee899c SHA-1: 5e082dfc8791d0c4b8304012faa32846afa1376c SHA-256: 9ac8acbd51f552a81e123564d8bd043df25092037f0d1a3709c81a071dc1246e

60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 90%

MITRE ATT&CK

T1204.001 Malicious Link

The critical heuristic firing for CVE_2008_2551 indicates the exploit of a known vulnerability in C6 Messenger ActiveX control. This exploit is designed to download and execute a payload from a remote URL. The embedded URL http://artisanballoonz.com/system/system.exe is highly suspicious and likely hosts the second-stage malware. The other embedded URL, while confirmed benign, is likely a decoy or related to the exploit's infrastructure.

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_off00001179.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1179	73272 bytes

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