C6 Messenger Downloader PDF malware analysis — malicious · ed135583ed1cec7e

MALICIOUS

PDF

51.1 KB Created: 2011-05-28 20:26:51 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 26acf68e1359f8b257cda609df52a37c SHA-1: 614d5ea2fb21f8be4afa728e2497d3016b6327f7 SHA-256: ed135583ed1cec7e37f953d4cea657358694f28cb2eb59fdf2a7c7dd9e618db1

62 Risk Score

Malware Insights

C6 Messenger Downloader · confidence 95%

MITRE ATT&CK

T1204.002 Malicious File

The sample is a PDF file that contains a critical heuristic firing for the CVE_2008_2551 exploit, which is known to be used by the C6 Messenger Downloader. This exploit is designed to download and execute a second-stage payload from a remote URL. The embedded URL http://artisanballoonz.com/system/system.exe is highly suspicious and likely hosts the payload.

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_off00000e29.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xE29	73272 bytes

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