PDF malware analysis — malicious · bfa3020e3015d69a

MALICIOUS

PDF

4.2 KB

MD5: c4385fb93d009a90f6470db42e7df529 SHA-1: 5b96b9b8b726108818316dd9a1200f29d9f2f03a SHA-256: bfa3020e3015d69a63e0f8c346ea0b5e23cb8d273e2169c8107fbbdcc18846e1

66 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file was flagged by a machine learning classifier as malicious with a very high probability. Static analysis revealed an embedded script payload within a PDF stream, indicating a likely attempt to exploit vulnerabilities in PDF viewers or trick users into executing malicious code. The presence of an embedded file further supports the malicious intent.

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` `16aeeebc96c5bac4285736752e10a45eb3141af2a59085fd811ac3b26a4a6320`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12896 bytes

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