PDF malware analysis — malicious · ba3396e2867614d7

MALICIOUS

PDF

2.7 KB

MD5: 7700220b54110fca901b78052f8bfd85 SHA-1: 2aa1320bb5b83951c5c9c30b7118b5301d679e02 SHA-256: ba3396e2867614d7d70a0e663add36c1dc12d539d1f5f55897f691636669eedf

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript streams, one of which utilizes eval() and String.fromCharCode() for obfuscation. This indicates an attempt to hide malicious code execution. The extracted JavaScript files, 'javascript_obj111711_000.js' and 'javascript_obj111712_001.js', are likely responsible for downloading and executing a secondary payload. Due to the obfuscation and lack of specific indicators, the exact family remains unknown.

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_obj111711_000.js` `55b2b4f546c2a06b7b0de30eb4bdf92da820cbf8b56113aa422e6373b1e652ea`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x197	370 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj111712_001.js` `b5749012a9301fa9b1db1f0e66861e315e6f41da1b6f15c5351e7b0610c960c8`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x246	3014 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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