PDF malware analysis — malicious · d5f5365659bbfc4a

MALICIOUS

PDF

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

MD5: 9948a71100884bc94850474ae4fe2f32 SHA-1: 764d61fac84e6268db9ec774e91d417338d88f9e SHA-256: d5f5365659bbfc4aca06919ea8e6fdbbfe831475866e16ba18ddedcd2dea815c

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file was flagged by a machine learning classifier as malicious with a high confidence score. Static analysis revealed an embedded script payload and an embedded file, indicating an attempt to deliver a secondary malicious artifact. The document body contains seemingly random text, which is common in obfuscated malicious documents.

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` `2c7a8b2df855f9f0284b65a52ce0bce9a3d5550437cf19c35ee0ce040692d902`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0xB97	6910 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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