PDF malware analysis — malicious · c01601d85b6a80cf

MALICIOUS

PDF

4.3 KB

MD5: 6ac783a131c0d8d4d1c03175de032ecb SHA-1: 64530543e08ced10b4c150366ed83497490dfa4a SHA-256: c01601d85b6a80cf5d10189939c7b32b30db529f2ec3ef270dbaabab0b1617b9

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL and PDF_FROMCHARCODE firings suggest that the JavaScript is obfuscated and uses eval() to execute code, a common technique for downloading and running further malicious content. The extracted artifact 'javascript_obj3957_000.js' is also flagged as suspicious due to script obfuscation. The overall pattern points to a malicious PDF designed to exploit vulnerabilities and deliver additional malware.

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj3957_000.js` `172402fcde43866c2bb2db9beb07aca38085d1584a42e3f5a6c0b20307d6cf84`	pdf-javascript-stream	PDF /JS object 3957 at offset 0x135	8322 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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