PDF malware analysis — malicious · 89fe1ae439dab276

MALICIOUS

PDF

45.6 KB

MD5: d2f4e95eb7f839f557b3ab364a26cd98 SHA-1: ef33dbc53e16dd988a065677fc286c893e7132d5 SHA-256: 89fe1ae439dab2764b498372174b1a01ed252b2d05b9c90c6f926f8df2210775

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating obfuscated content. Embedded JavaScript streams were detected, which are commonly used to exploit PDF vulnerabilities or download additional malware. The presence of these elements strongly suggests the file's intent is to execute malicious code upon opening.

Machine Learning

Nyx PDF Classifier malicious score 0.9555

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` `39c0f7badeaec63dd00a9ac761a68415871f19a477ff56911f52892fcad6b8ee`	pdf-javascript-stream	PDF /JS object 12 at offset 0xA1F4	3966 bytes

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