PDF malware analysis — malicious · 8fc28a375a3e27db

MALICIOUS

PDF

7.4 KB Created: 2012-08-04 17:40:47

MD5: 1d8476c092f30428490fbd9ffe56e759 SHA-1: 498dd46274e67523377d1af9129d4d6a92a7bb37 SHA-256: 8fc28a375a3e27db8163b04148e74ac80b2a4ce9608ece73084da09abfdb7ac4

68 Risk Score

Malware Insights

MITRE ATT&CK

T1557 Man-in-the-Browser T1204 User Execution

The PDF contains an embedded file, flagged by heuristics as a suspicious artifact and a potential script payload. The ML classifier strongly indicates maliciousness. The document body contains truncated text that does not provide clear context, but the presence of an embedded file suggests a delivery mechanism for a secondary payload.

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_obj0011.bin` `80862fd52a0e7716f1b031e9edc6b7bae81fad8b9910151436a91bdf303592af`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0xB97	6934 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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