PDF malware analysis — malicious · 707b9b4b370ac5bb

MALICIOUS

PDF

336.1 KB Created: 2011-07-07 20:55:04 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 67b52e4281a4f736eedc8ae7d8d8a814 SHA-1: 1fa312f72f41c8989117343e08bef3e183ac7157 SHA-256: 707b9b4b370ac5bb14b1ece6e1b6ee131faf4d1b40a2d7aeb76eac15c1d7fad0

92 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is a PDF file identified as malicious by a classifier and contains a heuristic indicating exploitation of CVE-2008-2551, a known vulnerability for downloading payloads. The embedded URL 'http://artisanballoonz.com/system/system.exe' is highly suspicious and likely serves as the secondary payload. The document body is unreadable, preventing further analysis of its specific lure.

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_off000003d1.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3D1	73272 bytes

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