PDF malware analysis — malicious · 365bbf1fabdb36a7

MALICIOUS

PDF

7.7 KB

MD5: 89c2a570036728342b19309dad64639e SHA-1: 35f29c121385a67132445e7009b168aaff5f1f4c SHA-256: 365bbf1fabdb36a7bf48ba74922dcdb89619659c54136eeabd3a45ec83a8c2b0

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 presence of PDF_EVAL and PDF_FROMCHARCODE firings, along with the extracted JavaScript files, suggests that the script is obfuscated and likely uses eval() and String.fromCharCode() to execute malicious code. This pattern is commonly used to download and execute further payloads.

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. (matched inside decoded stream)
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0004_000.js` `c012ede10f07e143b871e0d08f75ccc1ec464233b127265328d9f36ae6aa3d18`	pdf-javascript-stream	PDF /JS object 4 at offset 0xE1	311 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`stream_002_off00001c7f.js` `c3e55f087036198703ba05ade2b56b0e26edd090f1f3fa4af03b68958b289640`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1C7F	314 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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