PDF malware analysis — malicious · a9d15c23eeb34c9d

MALICIOUS

PDF

45.6 KB

MD5: 3882658abc6838c1da1f5171772b12d0 SHA-1: 362edc978e3b71ec5eec79b3b5d78eee696614b6 SHA-256: a9d15c23eeb34c9da55f5549628f37db6357d1fbd2f94d41b46c04239e90eb83

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF contains embedded JavaScript, flagged by multiple heuristics, and is classified as malicious by an ML model. The embedded JavaScript stream is the primary indicator of malicious activity, likely used to download and execute a second-stage payload. The ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' further supports the malicious nature of the file.

Machine Learning

Nyx PDF Classifier malicious score 0.9525

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` `8f4c1309339ae8bebaf703033d4b076f288ebb80c043851fd8a87ecf60aeff96`	pdf-javascript-stream	PDF /JS object 12 at offset 0xA1E2	4052 bytes

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