PDF malware analysis — malicious · 093e4ebb0c2e532d

MALICIOUS

PDF

345.6 KB Created: 2011-06-22 17:52:21 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: b1dd66be432bea3b24107bb8553c1ae2 SHA-1: 2c9762e9dfc88b5dc7266a4b1a8491f09a0582eb SHA-256: 093e4ebb0c2e532d2487f5afb331f95664c3914571e4ea3cbda63415e867e801

100 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for CVE-2008-2551, indicating an ActiveX exploit. This exploit is designed to download and execute a secondary payload from a remote URL. The presence of an unknown URL pointing to a .exe file further supports this, suggesting the file's primary purpose is to act as a downloader for malicious executables.

Machine Learning

Nyx PDF Classifier malicious score 0.9673

Heuristics 3

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.
Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT

Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
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_off000003d4.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3D4	73272 bytes

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