PDF malware analysis — malicious · 3fd518905957bfd5

MALICIOUS

PDF

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

MD5: 3974e4939bf623fc9134887be5bcc8c1 SHA-1: 47f8a3bd6a08aa16d10acd4e1f7c4645976219bb SHA-256: 3fd518905957bfd5b32a2a2eed459ab33ba5b800a27c640bc8df8393006af29b

68 Risk Score

Malware Insights

MITRE ATT&CK

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

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 embedded file, named 'embedded_file_obj0011.bin', is the primary indicator of malicious intent, suggesting it's designed to be opened by the user for further execution.

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` `d970f6fa0cde8573908694fced415e19edaddeab569a3b989feed7dfa7f02b51`	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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