PDF malware analysis — malicious · 30da238cfc9070f3

MALICIOUS

PDF

10.6 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: a76096a9a135c20c2e7fd3c3fef69483 SHA-1: ce3a4f423947b43094105d4989f0c2f9ecfbca97 SHA-256: 30da238cfc9070f303ba14a3e949f253739f8f04dd817983543b4bbeb2741fa2

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier also strongly flagged this PDF as malicious. The JavaScript appears to be designed to execute arbitrary code, likely to download and run a second-stage payload. The obfuscation makes it difficult to determine the exact payload or destination without further dynamic analysis.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `0097229dc1f52ee6e1fcda16afd6173e0d5a2c71fc389c18632d78c44cf1994d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	9248 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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