PDF malware analysis — malicious · b75a82de3b8d88c8

MALICIOUS

PDF

4.2 KB

MD5: 0678df9545e680e38c5bd12cef9d725d SHA-1: 2b32fbe27d9004bb1a926c85333f4c45418c1f46 SHA-256: b75a82de3b8d88c80db82517157e157643193d251b234b2a1b6149c06f023985

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF was flagged by a machine learning classifier with high confidence as malicious. Static analysis revealed embedded content, including a script payload within a PDF stream and an embedded file object. These findings suggest the PDF is likely intended to exploit a vulnerability or deliver a secondary payload to the user.

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` `ae33be4a8217652c0dfa85d5e7313444e2874d3353aba1657112d85df86039d4`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12927 bytes

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