PDF malware analysis — malicious · ebe637729a680806

MALICIOUS

PDF

118.6 KB

MD5: 41bbe9072bd7ebdeca40ea61d881b10d SHA-1: 524445637852ca5026e9df0cb42af7e178a3d274 SHA-256: ebe637729a6808063ae66a4c62cde12a5af84ed2ffa65129b2b985b1974dfec2

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, as indicated by multiple PDF_JAVASCRIPT and PDF_JS heuristics. A critical heuristic, CLAMAV_DETECTION, identifies it as 'Pdf.Exploit.Agent-36086'. The presence of PDF_EVAL and PDF_JS_LARGE_COMMENT_PADDED_EVAL suggests the JavaScript is obfuscated and designed to execute arbitrary code, likely downloading and running a secondary payload. The document body is unreadable, but the technical indicators strongly point to an exploit delivery mechanism.

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `50646ec323f2a6ca39555b58472890ce576729574ed7ba4aae2e096e156cf129`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	626897 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).

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