PDF malware analysis — malicious · 33f2a54b5718f479

MALICIOUS

PDF

102.1 KB

MD5: 2d5e37f66e7cb0615c56d49c03a1d22e SHA-1: cafd435727864b9df071cb85f5ce417128b0a22d SHA-256: 33f2a54b5718f479fc6aead69c029249d79f471077dbd3fc2d5a381896676927

108 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains XFA form elements and an embedded JavaScript payload. The JavaScript appears to be obfuscated but is designed to execute code, likely to download and run a secondary payload. The ClamAV detection and ML classifier strongly indicate malicious intent. The benign URLs present are likely decoys or standard XFA schema references.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
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/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_0000025e.bin` `4abe670af7296c897df2670024b9e5adc5f9d5130f3491397daebb58623ec9c8`	pdf-embedded-script	PDF raw stream script payload at offset 0x25E	103823 bytes

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