PDF malware analysis — malicious · 7fd89278a342aaf1

MALICIOUS

PDF

10.2 KB Created: 2009-10-07 23:16:58 Authoring application: HyCvpMPghkavXqPnl (via QirdeLNyIzRUNYourXmb)

MD5: 228c72d9cce4df4a616304aefb8f86a0 SHA-1: ad063da1a8fb51943cdab7209897ba3c0f895f78 SHA-256: 7fd89278a342aaf1f774177828fbbd69b0785e5353f766a5ef830f40b3a7f9d5

110 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically as Pdf.Exploit.Agent-35572. It contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics, and an extracted artifact named javascript_obj0007_000.js. This JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to download and execute a secondary payload, a common technique for initial access.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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` `ec8bc95cfa9fb071be4e7ffd59ff1b87095fb6a41cdc1463665ea88efed6441b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x2E7	8917 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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