C6 Messenger Downloader PDF malware analysis — malicious · 8375be8967389a94

MALICIOUS

PDF

52.4 KB Created: 2011-06-22 16:51:53 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: a8304698b240a2b2eac1d9fed7cb6e93 SHA-1: 7c7ddc754917364ca63a70861cdc099a435a814c SHA-256: 8375be8967389a9451ef1d5b6e1cde4c96fbab0c726e99b4601ad49f90b8d3fc

60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 90%

MITRE ATT&CK

T1204.002 Malicious File

The critical heuristic firing for CVE_2008_2551 indicates the document is designed to exploit this vulnerability. The embedded URL http://artisanballoonz.com/system/system.exe is likely the source of the second-stage payload. The exploit is designed to download and execute a malicious executable, leading to further compromise.

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_002_off00000a18.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xA18	73272 bytes

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