PDF malware analysis — malicious · bdfaef368f9c6f6f

MALICIOUS

PDF

651.6 KB Created: 2011-06-22 17:24:16 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 70332b116abb20ee37f9397937d4ea97 SHA-1: dea6c99123884047451caeffb8ff545777aeb495 SHA-256: bdfaef368f9c6f6f254b9c0e16b940f3ea3b1a0245c19420a684825d9860dfee

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious Link/Object

The PDF contains embedded JavaScript and a critical heuristic firing for CVE-2008-2551, indicating it exploits a vulnerability to download a payload. The embedded URL http://artisanballoonz.com/system/system.exe is highly suspicious and likely serves as the secondary payload. The optional content group with an action trigger further suggests 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_off0000111a.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x111A	73272 bytes

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