C6 Messenger DownloaderActiveX PDF malware analysis — malicious · dbc46110be314fe4

MALICIOUS

PDF

48.6 KB Created: 2011-05-26 12:53:38 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: fe317d5ea25f96433d74214d607ced40 SHA-1: 0d0562f19d0673fdf263579feb6988a47bca3487 SHA-256: dbc46110be314fe4fc18839f069bc8eff79a11f2e95e74b59dd00bc54b307d79

60 Risk Score

Malware Insights

C6 Messenger DownloaderActiveX · confidence 90%

MITRE ATT&CK

T1204.002 Malicious File Execution: User Execution of Malicious Code

The critical heuristic firing for CVE_2008_2551 indicates the file is designed to exploit this vulnerability. The embedded URL points to a potential secondary payload, 'system.exe', hosted on 'artisanballoonz.com'. This suggests the PDF's primary function is to act as a downloader for further malicious activity.

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_off0000045e.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x45E	73272 bytes

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