PDF malware analysis — malicious · e4f396d56f3f5be2

MALICIOUS

PDF

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

MD5: 26b8966307d0a8dde1b1adc4854c179d SHA-1: 5b140d2f77be977ea749c5e19704a7876e2f77c3 SHA-256: e4f396d56f3f5be22b8fce343e1226c047b70397b87c7e9f0782eeb4d10ecf3f

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The embedded JavaScript stream, named 'javascript_obj0027_000.js', is likely responsible for executing malicious code. The PDF_LAUNCH heuristic also suggests an attempt to execute an external file. The obfuscated nature of the JavaScript and the presence of a launch action point towards a downloader or dropper functionality, aiming to fetch and execute further malicious content.

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` `6fe5535c1117651732c55353edecf40dc6efe7df609cf5ed6a172e7b9e4c494f`	pdf-javascript-stream	PDF /JS object 27 at offset 0x1C1B	3367 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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