PDF malware analysis — malicious · 69da85c10e7741a5

MALICIOUS

PDF

371.3 KB Created: 2011-05-17 08:41:38 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: e96f381760fb95fa4ad458560b3a92c1 SHA-1: b822a84cca5fc85e9ceaa1a0ad3abe07a5196eed SHA-256: 69da85c10e7741a5d42301d4468cdde58417fc7e80bb02c706de5e6c79888c6d

92 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The PDF file contains a critical heuristic firing for CVE_2008_2551, indicating an exploit for a Messenger DownloaderActiveX vulnerability. This exploit likely facilitates the download and execution of a secondary payload, as evidenced by the embedded URL pointing to 'artisanballoonz.com/system/system.exe'. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9685

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_off00000827.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x827	73272 bytes

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