PDF malware analysis — malicious · abf0d119b21b8bd4

MALICIOUS

PDF

825.5 KB Created: 2011-04-22 21:48:56 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 9273b007c0e3aed390cb5c87a6e75d51 SHA-1: 735cd527722198854de2b39945bcf4a1f5d25758 SHA-256: abf0d119b21b8bd48bfc346bea6d1deba582f0bc9621d0f6288848010dc5044a

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1204.001 User Execution: Malicious Link

The sample is a PDF document that contains embedded JavaScript and exploits the CVE-2008-2551 vulnerability. This exploit is known to download and execute a secondary payload from a remote URL. The heuristic firing for CVE_2008_2551 and the presence of an embedded URL pointing to a .exe file strongly suggest this behavior. The document body is truncated and unreadable, providing no further context.

Heuristics 4

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 JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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_002_off000007a6.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x7A6	73272 bytes

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