PDF malware analysis — malicious · a1c9289306a0b281

MALICIOUS

PDF

45.4 KB

MD5: c2ea4cfdfaecaa7ac8c9fdcb6f1494ca SHA-1: 8c47d765dcf0394b16b6a45bc73ffa95afdebdc8 SHA-256: a1c9289306a0b2813066b7be99ff1b021e35dcf72bc915cd2682af88d40e153f

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics confirm its malicious nature. The embedded JavaScript is likely responsible for executing malicious code, potentially leading to further compromise. The presence of XFA form elements (PDF_XFA) is also noted.

Machine Learning

Nyx PDF Classifier malicious score 0.9955

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` `4abb920633a6ed677c8b3ea906f37aaa5d55e2f95ea0c4d77cea7837c79ab650`	pdf-javascript-stream	PDF /JS object 12 at offset 0xA212	3847 bytes

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