PDF malware analysis — malicious · 19b7341821b206b7

MALICIOUS

PDF

100.7 KB

MD5: 102cd8775d456a274a79b06b32c25452 SHA-1: a71b940d139e5ba76101d2cbacd8fdc7c466613a SHA-256: 19b7341821b206b7209c2d5178d96525809cdc03249bd0a73f04d4c8c3b79441

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 embedded script payload and XFA form usage. The embedded JavaScript, though obfuscated, appears to be designed to execute code, likely for downloading additional malware. The benign URLs present do not detract from the malicious nature indicated by the other findings.

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_00000246.bin` `17a050f9aff438e1debd191aa7feaf2c84d669bc59aee7e6ae593ba3ec030912`	pdf-embedded-script	PDF raw stream script payload at offset 0x246	102347 bytes

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