PDF malware analysis — malicious · 6ceab16339606357

MALICIOUS

PDF

15.8 KB

MD5: dd05cd61dfa389a33c2b8aeef7a84634 SHA-1: 3f5220d160b6d379251bf421e8813be74585a0ba SHA-256: 6ceab16339606357e108d4768f476e120405470c3d4e83c58b610e6491818f07

256 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file contains obfuscated JavaScript that utilizes eval() and String.fromCharCode(), indicative of an exploit. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to download and execute a secondary payload. The primary technique observed is the exploitation of a PDF vulnerability to run JavaScript.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
JavaScript action low 3 related findings PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
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.
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.
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
dbe108044f1246a923c19aaf1fca0d14d9f0ae29935abf1dace78f4c2d4111f5 pdf-javascript-stream PDF /JS object 6 at offset 0x143 425476 bytes

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `dbe108044f1246a923c19aaf1fca0d14d9f0ae29935abf1dace78f4c2d4111f5`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	425476 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).
Preview script First 1,000 lines of the extracted script function xBl(qd8){ /*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 ... (truncated)

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).

Preview script

First 1,000 lines of the extracted script

function xBl(qd8){ /*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
... (truncated)

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