PDF malware analysis — malicious · bd87135633f4a26b

MALICIOUS

PDF

9.6 KB Created: 2009-02-19 14:45:49 -02:00 Authoring application: Writer (via OpenOffice.org 3.0)

MD5: 67b87bd32ef16c94294249efd6fa8959 SHA-1: 79c06e7c8e319a5386cc46be351e0bde5732e49f SHA-256: bd87135633f4a26bcdec2bfbf7f8eb2c98ba3320ed9251b6d7de51fe2f374364

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. A PDF_LAUNCH heuristic also fired, suggesting an attempt to execute an external action. The embedded JavaScript stream, named 'javascript_obj0027_000.js', is likely responsible for the malicious behavior, possibly downloading and executing a secondary payload. The use of eval() within the script further supports this, as it's often used for obfuscation and dynamic code execution.

Heuristics 5

Launch action high PDF_LAUNCH

PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
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.
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_obj0027_000.js` `3961f0d224f8c303ca42a983c4a75c81a227c23f0f6959b7914b3a4042c1b81f`	pdf-javascript-stream	PDF /JS object 27 at offset 0x1C1B	3213 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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