PDF malware analysis — malicious · b7940da7ed98733e

MALICIOUS

PDF

45.4 KB

MD5: e52574c8623b84b5c49aa4b9ddddfd13 SHA-1: 048374854b9d17e05414b4750a7b9126ecf57e53 SHA-256: b7940da7ed98733ecb59991ab88d52399dd80721712b8224e4686f95bf5c377f

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as containing obfuscated JavaScript. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript stream is the primary mechanism for delivering the malicious payload, likely involving obfuscated code execution.

Machine Learning

Nyx PDF Classifier malicious score 0.9606

Heuristics 5

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/2.6/
- http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_000.js` `56665d2c35b941412ae83fdb121dff3c369622dc521637d1edb991067835222c`	pdf-javascript-stream	PDF /JS object 12 at offset 0xA1ED	3366 bytes

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