PDF malware analysis — malicious · 571de6a7ae2165e0

MALICIOUS

PDF

4.2 KB

MD5: 9cfce03fe6a0f88c82797c23169a6652 SHA-1: 0823e22711fb35ae64ac5fa71de82c313b7a3590 SHA-256: 571de6a7ae2165e0f9802cc529eb21a78faf75748a195e64a5fdd6be14b5aa66

66 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF exhibits high confidence maliciousness based on ML classification and the presence of an embedded script payload. The embedded file artifact suggests it's a component of a larger attack chain, likely for delivering further malicious content. The XFA form and embedded file heuristics further support its malicious nature.

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` `1f1303d8c07acb381e863fdd3850f33c3e2ecf31066b34176c9b82724053e9e4`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12877 bytes

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