PDF malware analysis — malicious · e350f6da5ca2c059

MALICIOUS

PDF

358.5 KB Created: 2011-04-13 09:47:18 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 31cb81d420cf4a5237fbb19a29b302fc SHA-1: f7ecf6028cb4f9aab8fb15f9ffd14425f5846f19 SHA-256: e350f6da5ca2c05937131f66529c6eb6575d2b8f219bc05dbb1e323e9192c6b4

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains embedded JavaScript and exploits the CVE-2008-2551 vulnerability. The primary goal appears to be downloading and executing a second-stage payload, indicated by the embedded URL pointing to 'system.exe'. The exploit targets PDF readers, suggesting a drive-by download attack vector.

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_001_off000003af.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3AF	73272 bytes

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