PDF malware analysis — malicious · 5223b2d2a8271316

MALICIOUS

PDF

6.6 KB

MD5: e96f01c1cdae85f0fc3c0e9aa788a687 SHA-1: 945dd2550c7b0ec1a955bd851cf0454dd02a16e0 SHA-256: 5223b2d2a8271316e5fd36415242a93b6165c9a847722315d2522bb92756f532

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identifying it as 'Pdf.Exploit.Agent-36086'. The embedded JavaScript, although not fully detailed here, is the primary mechanism for exploitation, likely leading to the download and execution of further malicious code. The presence of a long encoded blob and script obfuscation indicators in the static triage further supports this. The document body is unreadable, so the rationale relies on the technical indicators.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
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_obj0006_000.js` `0a33395a8b6fbe90dfdb8e18df6a6cb30f0eb10e24d9611b754e5f6819fea716`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	137518 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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