PDF malware analysis — malicious · 52276c4626f8b530

MALICIOUS

PDF

240.2 KB Created: 2011-06-22 17:19:03 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 244c19f7ede48af747ee1af40bdcbf3c SHA-1: ebbfe1351778f85fade22d8ee7f7a02538904b2b SHA-256: 52276c4626f8b5300c7f0f45187923eb699db67b87e335bba4bdcfb78361f41d

62 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains a critical heuristic indicating the exploitation of CVE-2008-2551, a known vulnerability associated with the C6 Messenger DownloaderActiveX. This exploit likely facilitates the download of a secondary payload. An embedded URL, http://artisanballoonz.com/system/system.exe, is present and flagged as unknown reputation, suggesting it is the likely source of the malicious payload. The document body was unreadable, but the exploit and URL strongly indicate a downloader 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_off000003be.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3BE	73272 bytes

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