PDF malware analysis — malicious · f54e420586c0b47c

MALICIOUS

PDF

19.7 KB Created: 2010-03-13 23:18:30 Authoring application: oHnVlIdWm (via CDNexqb7O4X)

MD5: 2e76d56e734952e6c130de79344505a9 SHA-1: fe3518466e8eec0f8c5f4f0df59739753306b3ff SHA-256: f54e420586c0b47c20a7662b662656fd20afeac251a586354bfc947936a189cf

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL heuristic firing suggests that the JavaScript is obfuscated and uses eval() to execute, which is a common technique for hiding malicious code. The extracted artifact 'javascript_obj0007_000.js' is also suspicious. The overall intent appears to be the execution of a second-stage payload, though the exact mechanism is obscured by the JavaScript obfuscation.

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` `73f88226c226d682a51f3e04144bbe6a9b843866dfc3f0bb39313433be565f21`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23E	18958 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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