PDF malware analysis — malicious · 31546857ed2fda7b

MALICIOUS

PDF

123.6 KB

MD5: cf90c8c1dd113621559f55ac62ba869b SHA-1: a47fb28a9a98d26859615d7771bbb5aa42260491 SHA-256: 31546857ed2fda7be0d919aaf0ff8b7d627d14d46d8b830f338aa4d5b9069c1e

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: Malicious PDF T1059 Command and Scripting Interpreter

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-78' and a high ML classifier score. It contains an embedded script payload, indicating it's designed to execute malicious code. The presence of an XFA form further suggests a complex PDF structure often used for exploitation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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_00000329.bin` `b13828e5c1e0f30dd77016affb4b0b82c391a7cea6c6ce2c0c774cf57d30ab03`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	125787 bytes

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