PDF malware analysis — malicious · 87309965c168dabb

MALICIOUS

PDF

97.3 KB

MD5: dadb1283f2beb4266b965b1efa49613c SHA-1: f88e2b1a0e7b8ec6a2c7f5d2f7bf83b470e02ed3 SHA-256: 87309965c168dabbe507139b66906aa351348a47055b95720116dc12bd904adb

108 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating an XFA form and an embedded script payload. The embedded JavaScript, though obfuscated, appears to be designed to execute code, likely for downloading additional malware. The benign URLs extracted are related to XFA schema definitions and do not appear to be malicious.

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_0000026c.bin` `0c09a78b46be6f95297068b6b594b22ef75ed0a4dbcb56f16df223a8e3b390f0`	pdf-embedded-script	PDF raw stream script payload at offset 0x26C	98867 bytes

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