C6 Messenger Downloader PDF malware analysis — malicious · eed54d9f1fa65e48

MALICIOUS

PDF

188.4 KB Created: 2011-04-13 09:17:35 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: cb7bb52b6f6235bed8ae1b83a3b3a23d SHA-1: b7488f9264ae81076fdf42a3f9e26cc2da50aecf SHA-256: eed54d9f1fa65e48ae0b704e577a442a04d71d863a31eb2ed723e38fecf5e034

60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 90%

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File

The sample is a PDF document that contains a critical heuristic firing for the CVE-2008-2551 exploit, which is known to download and execute arbitrary files. The embedded URL http://artisanballoonz.com/system/system.exe is highly suspicious and likely serves as the download location for a malicious executable. The document body was unreadable, but the exploit and URL strongly indicate a downloader attack pattern.

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_off000003f7.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3F7	73272 bytes

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