PDF malware analysis — malicious · 794ec2ce74d97368

MALICIOUS

PDF

15.7 KB

MD5: 992bdafc55404057e7accdd8e05e8ab5 SHA-1: 0b2cffd2d8b4c7ece11036c72703652e5c64c533 SHA-256: 794ec2ce74d973683fa19ab54a8d26cecbaaec0862ab2be4b510f9fce8256d81

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. A critical ClamAV detection (Pdf.Exploit.Agent-36086) confirms its malicious nature. The presence of large, obfuscated JavaScript streams suggests the primary function is to download and execute a secondary payload. The extracted file names 'javascript_obj0006_000.js' and 'legacy_pdfkit_stage_000.js' are noted as suspicious artifacts.

Heuristics 7

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
Large comment-padded JavaScript eval stager high PDF_JS_LARGE_COMMENT_PADDED_EVAL

PDF JavaScript contains a very large stream padded with long random-looking block comments around String.fromCharCode and eval. This is an exploit-kit obfuscation shape used to bury a decoder and recovered stage inside noise, not normal PDF form automation.
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_obj0006_000.js` `dff446bce6fc82fa244f65cd8c3ae990bfb07e1bd42ee02ccaeb07bc66feb0e6`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	424452 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 42 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `7fc065a20ddc398884d5daa55637ffa4084b16e28f6e70af129bd07d982bcc45`	deobfuscated-js	double percent-decoded annotation JavaScript at offset 0x143	262144 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 481 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.