PDF malware analysis — malicious · 897c5f92517cc1ec

MALICIOUS

PDF

12.7 KB

MD5: 39fb055d23f477054fa939c8b406c6dc SHA-1: 450a7a7aca075c8452b3cb8fceb00fe820e54761 SHA-256: 897c5f92517cc1ecfb0ccbe1cb67bd057b357fc3904f13acdf3f33b3b4f523fd

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The file is a PDF identified as malicious by ClamAV and an ML classifier. It contains an embedded script payload, a common technique for delivering exploits. The presence of XFA form elements further suggests a complex, potentially malicious, PDF structure. The embedded script is likely responsible for downloading and executing a second-stage payload, though its exact functionality is obscured.

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
Embedded script payload in PDF stream medium 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.
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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000359.bin` `060e7ee1a05f0d5a31717c24b0f9eee64093afa0d930ad87568a11251aabda70`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	12270 bytes

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