C6 Messenger Downloader PDF malware analysis — malicious · 7c1520107c93c87b

MALICIOUS

PDF

56.1 KB Created: 2011-05-28 20:35:34 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: cc9b9a456b4768d6d78d636dbe6bd957 SHA-1: d8bc6ccbedb3aa23486acee128c39c1da16a8fb6 SHA-256: 7c1520107c93c87b7bbb1c3100b9b1bd29e0b576a1fe16475cb82ec4f5e22bd5

60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 90%

MITRE ATT&CK

T1204.002 Malicious File

The PDF file contains a critical heuristic firing for the CVE-2008-2551 exploit, which is known to download and execute secondary payloads. An embedded URL points to a suspicious executable file, 'system.exe', on the domain 'artisanballoonz.com'. This indicates the file's primary purpose 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_003_off000014ea.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x14EA	73272 bytes

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