PDF malware analysis — malicious · 26ec40ea0469e9ee

MALICIOUS

PDF

3.0 KB

MD5: 98b64492a649a55bf4e5e4fec391837a SHA-1: 06b8d55cd9aa72bba877273531b923e416dd7c07 SHA-256: 26ec40ea0469e9ee28dd1e5d1831a1ee491f005aff386810ce42b156de60fa76

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the 'Pdf.Dropper.Agent-1616992' ClamAV detection name. The ML_NYX_PDF_MALICIOUS score of 0.999975 further reinforces the malicious nature of this file.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Dropper.Agent-1616992 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1616992
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_obj0009_000.js` `697e516e04d770be768a723151ec1ea7ec63ced96845e7f811ea26f583df0b3d`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	20833 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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