PDF malware analysis — malicious · c675d854efcc33da

MALICIOUS

PDF

4.1 KB

MD5: 036724bafef673402f69d2369c6bf0dd SHA-1: de69bc0d344baaf70261058b79db6c40674fe303 SHA-256: c675d854efcc33da9e5fa67c9fcfe5ee08ea6cc9f39dc9afc791fbef06de2ec1

68 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF was flagged by a machine learning classifier with high confidence (0.999972) and heuristics indicate an embedded script payload. An embedded file object was also detected, suggesting a multi-stage attack. The embedded script is likely responsible for downloading and executing a secondary payload, though its exact functionality could not be determined due to obfuscation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `3e61ec2e069c4ba582fd26427f2d44c0ab99a4d8c6cccf356bb872a3ba4a8295`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12556 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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