PDF malware analysis — malicious · 12d036629c5c04b1

MALICIOUS

PDF

172.7 KB Created: 2011-04-27 03:25:30 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: f8cf9aaa455799c09192d7c2f34350ae SHA-1: 98fe98dae8d2f976858dc07cb4931bca1b42a755 SHA-256: 12d036629c5c04b113915e98b8dd47fdab7f486e79daf2c995cd050a56de4dbd

92 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is a PDF file that contains a critical heuristic firing for CVE-2008-2551, indicating an exploit for the DownloaderActiveX component. This exploit is designed to download and execute a secondary payload, likely the 'system.exe' found at 'http://artisanballoonz.com/system/system.exe'. The presence of an embedded URL, even if confirmed benign, further supports the download and execution attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.6705

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_off000003df.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3DF	73272 bytes

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