C6 Messenger Downloader PDF malware analysis — malicious · ca5ecd1e6c0d7e74

MALICIOUS

PDF

373.1 KB Created: 2011-05-17 08:54:12 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: d9b7a8ef5537748befe2cd44b09728f1 SHA-1: 317165b493a7d5bd2eb09cd29db1572eb23d08f0 SHA-256: ca5ecd1e6c0d7e7412fe26ef7a65e7dcc52f82699a98843f04e771bb7b07a558

60 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 90%

MITRE ATT&CK

T1204.001 Malicious Link/Object: User Execution

The PDF contains a critical heuristic firing for the CVE-2008-2551 exploit, which is associated with the C6 Messenger Downloader. 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.

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_off0000063b.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x63B	73272 bytes

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