PDF malware analysis — malicious · 7fc3942561d68f83

MALICIOUS

PDF

14.6 KB Created: 2010-02-01 07:30:34 Authoring application: zAaGRlfEUqbKSuaz (via fqkwLFiENwJSdHR)

MD5: 10755f2febb792f0d40b3eca6edcab99 SHA-1: d72e350584637c24476ee60d1a9ff8dbef9c714a SHA-256: 7fc3942561d68f835341cb6f43cf26b3268043aab52b5d7281fe994450eaedae

108 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.Dropper.Agent-7277009-0' and an ML classifier indicating high maliciousness. The presence of embedded JavaScript, identified by PDF_JAVASCRIPT and PDF_JS heuristics, strongly suggests the document's purpose is to act as a dropper. This script likely downloads and executes a second-stage payload, which is a common technique for malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7277009-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7277009-0
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.
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_obj0007_000.js` `78a37f24f062ebbea50ecc2a46b0180b2e80cf895d8491ccd41eb5b2f97142ef`	pdf-javascript-stream	PDF /JS object 7 at offset 0x3E1	13262 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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