PDF malware analysis — malicious · 1ea2b3946e893a2d

MALICIOUS

PDF

551.4 KB Created: 2011-07-08 00:15:59 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 0a2b00de489fa8d7457e34d5dfde6b4d SHA-1: 41c9e62ca5f9d623060d27c58f99d0ac74dbc438 SHA-256: 1ea2b3946e893a2d72d11a15723660483e1bd08dffc447e2aac2f2a65654cb7b

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF contains an embedded JavaScript stream and a critical heuristic firing for CVE-2008-2551, indicating it's designed to exploit a vulnerability. The primary goal appears to be downloading and executing a secondary payload from the URL http://artisanballoonz.com/system/system.exe. The optional content group with an action trigger further supports the malicious intent.

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_off00000b4a.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xB4A	73272 bytes

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