PDF malware analysis — malicious · 4ded2bd3d0893497

MALICIOUS

PDF

118.5 KB

MD5: 0b6f21472c544d212803b9c42c20f298 SHA-1: f43da192c55d7d670d9b325b4e9b8eee01a4245a SHA-256: 4ded2bd3d08934971e02e1eddc1cdffaf92c01576e4127f829de7e1ec70a324b

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF contains embedded JavaScript, including a heavily obfuscated 'eval' stager within a large comment. This script is designed to download and execute a second-stage payload. The ClamAV detection 'Pdf.Exploit.Agent-36086' and the presence of JavaScript heuristics like 'PDF_JAVASCRIPT', 'PDF_JS', 'PDF_EVAL', and 'PDF_FROMCHARCODE' strongly indicate malicious intent. The extracted JavaScript file 'javascript_obj0006_000.js' is a key artifact.

Heuristics 7

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
Large comment-padded JavaScript eval stager high PDF_JS_LARGE_COMMENT_PADDED_EVAL

PDF JavaScript contains a very large stream padded with long random-looking block comments around String.fromCharCode and eval. This is an exploit-kit obfuscation shape used to bury a decoder and recovered stage inside noise, not normal PDF form automation.
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_obj0006_000.js` `62c431ae3650861b0aba46bab7e8066c63a101a83bfa8ef0fb59aea4ac96d7e9`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	627163 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 42 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.