PDF malware analysis — malicious · ee0375fa8ff2fe4c

MALICIOUS

PDF

15.7 KB

MD5: 3a3551f64ce4a72dc5576f7a91d08647 SHA-1: 2d22d07245cd7b75b5bfaf390a6e98e1c6e1ef93 SHA-256: ee0375fa8ff2fe4ceebbd10280e1a4bdf5b0e32f59b82aa60fb701e1bd45d393

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. The presence of a 'Large comment-padded JavaScript eval stager' suggests an attempt to obfuscate malicious code execution. The embedded JavaScript streams, named 'javascript_obj0006_000.js' and 'legacy_pdfkit_stage_000.js', are likely responsible for downloading and executing a second-stage payload, as suggested by the ClamAV detection of 'Pdf.Exploit.Agent-36086'.

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` `f7695ce4607e2f459ac5489c7eadee4df1c0e4e60bae31442859c82e0e25af84`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	424705 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` `24905a7a5ec74cffb6f7a69b6891afe2b06eab0c86d38a966de067975ae2ff72`	deobfuscated-js	double percent-decoded annotation JavaScript at offset 0x143	262144 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 776 long base64-like blob(s).

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