PDF malware analysis — malicious · 45bd11ba35259f04

MALICIOUS

PDF

2.7 KB Created: 2564-01-01 Authoring application: 2681

MD5: d6e3022bccf68f3f030da31b3e7b22d3 SHA-1: 80117222c1b405e51111d62f4bda388d6f8f00c2 SHA-256: 45bd11ba35259f045f02eb9bb548e4798ccdea1ba47c6e5d60deef9a3dc01eee

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF was flagged by ClamAV as Pdf.Exploit.Agent-36014 and a machine learning classifier indicated a high probability of maliciousness. Embedded JavaScript streams were detected, suggesting an attempt to exploit vulnerabilities within the PDF reader. The ML classifier's high confidence and the specific ClamAV detection point towards a known exploit, likely delivered via a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `799a1800c13abbdadb57307d6774b882eb1e6b903d40c9f1352bf37c4efa9375`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4791 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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