PDF malware analysis — malicious · 446a6f11ad612fe1

MALICIOUS

PDF

3.9 KB

MD5: 914d590e1ced277e5f2ab139517605b7 SHA-1: e7bb3859c05e64eb0839f66ec5f86acb031a3e3c SHA-256: 446a6f11ad612fe199a8bebd2f0f47064ed7b3b1f46f28f47bf2ccfa216ca412

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 suggests that the JavaScript is obfuscated and likely used to execute arbitrary code, potentially downloading and running a second-stage payload. The extracted file name 'javascript_obj111712_001.js' also points to script-based malicious activity. Due to the obfuscation and lack of specific indicators, the family is 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` `16290ebf9683eef31923461dd66455273b7582ef44467d87ee3e6e061c12f1c0`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x197	4782 bytes
`javascript_obj111712_001.js` `ac5efed02c6c924ab9efed78b15f178486b3b54e92edbcd28e46e3f8c0053ba7`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xD81	526 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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