PDF malware analysis — malicious · b0fa84e833c86223

MALICIOUS

PDF

7.6 KB Created: 2012-05-13 14:15:34

MD5: b9c99a2e3f2319287e8eacd1686a833e SHA-1: 00de3a6555b3f165116026df3ad968b35b085554 SHA-256: b0fa84e833c862232d031ccbf57fd58efb5505ce4a644324118c8f2def9decd3

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell T1105 Ingress Tool Transfer

The PDF sample was flagged by a machine learning classifier with high confidence as malicious. Static analysis revealed an embedded script payload and an embedded file, indicating an attempt to deliver a secondary malicious artifact. The embedded file, named 'embedded_file_obj0007.bin', is likely the next stage of the attack.

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_obj0007.bin` `414b0de9656050be58e15c3bddabdf936adfebfbb99a124da9063370bb8ceff6`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0xB87	7227 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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