PDF malware analysis — malicious · 4316bb479a4e7d34

MALICIOUS

PDF

4.2 KB

MD5: c40acc759ea0e448f00ec04047da620b SHA-1: f15d8d00e9f74eb07e9ec925a3e44b734ab6f937 SHA-256: 4316bb479a4e7d3448868e6c3a5eb4c28cc1b582ba84678e9d6426e9f0144bb9

66 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file was flagged by a machine learning classifier with high confidence as malicious. Static analysis revealed an embedded script payload within a PDF stream, indicating an attempt to deliver and execute malicious code. The presence of an embedded file further supports the malicious nature of the document.

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` `16add02b6358b837753062d9f5e8bbe4403c8d91cb4034418dd932a2cf48d144`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12846 bytes

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