Pdf.Dropper.Agent-7212195-0 PDF malware analysis — malicious · 4b6f659ab69fc6f3

MALICIOUS

PDF

2.7 KB

MD5: 201c7cb8c15788a27c62bf903e69201c SHA-1: c985c5e966a3d9a07d2ce5d530a17b5904ff1b5e SHA-256: 4b6f659ab69fc6f3f6786abdc02057541e0d75c717598e04af99dbad44420136

158 Risk Score

Malware Insights

Pdf.Dropper.Agent-7212195-0 · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a dropper. Embedded JavaScript, including calls to eval() and String.fromCharCode(), indicates obfuscated code designed to download and execute a secondary payload. The presence of two embedded JavaScript files further supports this dropper functionality.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7212195-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7212195-0
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111611_000.js` `9347330895f6845996b30d1f144fbcfecb72f7910b628ffdda22ee9913909983`	pdf-javascript-stream	PDF /JS object 111611 at offset 0x197	256 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj111612_001.js` `4b8534f73d9cf760483f8d61e4fab51fd58c00b32e375a8c7771f6b8ec535a0f`	pdf-javascript-stream	PDF /JS object 111612 at offset 0x266	3307 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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