PDF malware analysis — malicious · 57e9143879821e6f

MALICIOUS

PDF

2.9 KB

MD5: 433e686e2c616e69eea151b7c4e14ba1 SHA-1: 27cf7f3ac837374770dc5d367be6742d705dcb64 SHA-256: 57e9143879821e6fdeb11da12cc9704a4d7ceed92102d1a80cddf2ad1c8f5d28

86 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ClamAV detection 'Pdf.Exploit.Agent-6305' strongly suggests a known exploit. The embedded JavaScript file 'javascript_obj0009_000.js' is the primary artifact, likely responsible for downloading and executing a secondary payload. The document body is unreadable, but the presence of JavaScript and the exploit detection point to a malicious intent.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-6305 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6305
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` `869f87fa5c8fa941c9ff6a86dbf43a2ea13636276fc68c12d3c484bfb4d1cbea`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	20097 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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