PDF malware analysis — malicious · 29212615afea2407

MALICIOUS

PDF

17.9 KB Created: 2009-02-10 23:40:13 Authoring application: Or94YiV (via TFKd2bAG4fLFux)

MD5: 8902db30a64a87b94f2c0bcef2c916ff SHA-1: 66946619227ec8970e80ee1c027f9042ce005be6 SHA-256: 29212615afea240745d8fc65bd85d4a7cb05fa36e28fd0a38a723cd548d4e17e

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The eval() call suggests obfuscated code execution. The embedded JavaScript file, javascript_obj0007_000.js, is the primary artifact. The script likely downloads and executes a second-stage payload, contributing to the malicious verdict.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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_obj0007_000.js` `4d82c549f3e701a50c3d954e4477bccbb9b66da32ad7a55a1208cf93ebe894cd`	pdf-javascript-stream	PDF /JS object 7 at offset 0x243	17129 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 8 long base64-like blob(s).

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