PDF malware analysis — malicious · 9b3fe350ef69720b

MALICIOUS

PDF

4.1 KB

MD5: a3c931e9003d277db7e54c5188cb393d SHA-1: 464ec5d43811cf5bbf32cc790248128fd8700e40 SHA-256: 9b3fe350ef69720b835d1e37bad08f9f4e5ce42c9967560e057629a6c9174dc7

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier with high confidence. Static analysis revealed an embedded script payload within a PDF stream, indicating an attempt to execute malicious code. The embedded file artifact further suggests the PDF is a container for malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `ac8c38b213df9ed06a0956f267ca434e95feaffa5a40e9f8b6d902a7930a4ab8`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12668 bytes

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