PDF malware analysis — malicious · 5b06b7347bed4eaa

MALICIOUS

PDF

51.0 KB

MD5: bfe1ba41cc5a8dc0cc76dd1be89d16ba SHA-1: c31c853ff536802b845e4c4fb903e4a78d831d33 SHA-256: 5b06b7347bed4eaa5f9895d2f6d11f56563dbecb521098395d35b56819e6f38e

108 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains an XFA form and an embedded JavaScript payload, strongly indicating an exploit attempt. The JavaScript is obfuscated but appears to be designed to download and execute a secondary payload. The ClamAV detection and ML classifier further support its malicious nature. 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_00000240.bin` `f79db198231a026c84fa8150520e580778ab55113d7030613c36d6c95fea50a0`	pdf-embedded-script	PDF raw stream script payload at offset 0x240	51492 bytes

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