PDF malware analysis — malicious · 800a1bf7a0e73472

MALICIOUS

PDF

352.3 KB Created: 2011-04-22 05:29:39 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 4aff6789e48f12bc89d3a753ca1548ca SHA-1: 226c5a9d570f197b8d04b8bbc297547943f5e5cc SHA-256: 800a1bf7a0e734727e5da182375d6197735d3c21244456af13c9c55db343b7a2

92 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The PDF contains a heuristic match for CVE-2008-2551, indicating an exploit for a DownloaderActiveX component. The embedded URL http://artisanballoonz.com/system/system.exe is likely the second-stage payload. 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_off00000961.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x961	73272 bytes

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