PDF malware analysis — malicious · 6ea08794b8113b05

MALICIOUS

PDF

50.3 KB Created: 2011-07-08 20:24:47 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 24e91d9d7b1299402fac16c4ac5175ea SHA-1: 5bb0c030d5a024ea8088f84d8a2f261cea9a6c54 SHA-256: 6ea08794b8113b05b7f5e9b4d2cd27289b04092233daa3daba0a9e2762afbd86

92 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The PDF contains a heuristic match for CVE-2008-2551, which is an ActiveX exploit used for downloading payloads. The embedded URL points to a CAB file, likely containing an ActiveX control, and another URL is present that likely hosts the second-stage executable. The ML classifier also flagged the PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.6105

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_off00000b5a.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xB5A	73272 bytes

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