PDF malware analysis — malicious · f5f1ccee2d5fcf3d

MALICIOUS

PDF

6.6 KB

MD5: f0fa57fe1390b0c0419e23a82c71fb75 SHA-1: aa867c4ff0b7be3bf9119dce5dd23ae3a3ceeaa2 SHA-256: f5f1ccee2d5fcf3d26b2639cf912e0351f8cda9b222868bfa51db360627a9b3b

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36086' and a high ML score. Embedded JavaScript was detected and extracted, indicating an attempt to exploit PDF vulnerabilities. The ML classifier's high confidence and the specific ClamAV detection strongly suggest this PDF is designed to deliver a malicious payload, likely through the execution of embedded scripts.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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
`javascript_obj0006_000.js` `3ad496895e64e63a3b367949efb6b8c23e49330344edfeb18239cffaa64ab9dc`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	137519 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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