PDF malware analysis — malicious · e255c59ecc0899f9

MALICIOUS

PDF

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

MD5: e230a92ce6592c7da3f96e866165f36f SHA-1: 5962c0d6b1a3228f4d2ce2c46bf9665eb2d9f51d SHA-256: e255c59ecc0899f9f379bf0bbbf83bfe5edc2db53d90b1a5586d78fa3b633277

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file was flagged as malicious by an ML classifier and contains embedded JavaScript. The JavaScript stream, named 'javascript_obj0013_000.js', exhibits obfuscation indicators and contains an eval() call, suggesting it's designed to execute arbitrary code. The presence of PDF-specific heuristics like PDF_JAVASCRIPT and PDF_JS further supports the malicious nature of the embedded script. The script's intent is to download and execute a second-stage payload.

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` `a5603c953af5f24dc1f7e2317e815d62e8085ca94a8b176d18e77ca7dfba1fd8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	6708 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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