PDF malware analysis — malicious · bf088610dd0b241b

MALICIOUS

PDF

28.0 KB Created: 2010-03-14 10:19:03 Authoring application: OugDELqFR9 (via vjUmUfhIzXFq3)

MD5: 9f486460d69751014d34002524078ce4 SHA-1: c2f7bd65d8fdf4ad2a4bcaf719617d99a0c1f10e SHA-256: bf088610dd0b241b5755ac70b7a5b89246c1cda5ca69f07024b7cd63945fbb14

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The high-severity PDF_EVAL firing suggests the use of eval() for executing potentially obfuscated code. The extracted artifact javascript_obj0007_000.js is likely responsible for the malicious behavior, possibly downloading a second-stage payload. The document body is unreadable, so the rationale is based solely on the script execution.

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` `e57e49d1f60b35be1b307e4c6a01ea9dee070a44c8361fcac060c6ebd1fc714b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x24A	27436 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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