PDF malware analysis — malicious · 35f38221074ae086

MALICIOUS

PDF

1.99 MB

MD5: 56e845a5f472a888fe1dfcf9f210ccc0 SHA-1: d23cad88ad4c95e2264740da39ebd8835e2c39e8 SHA-256: 35f38221074ae0867ad2adcd3a0d99e6464535111bc9deb14402f017b209bb1f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_EVAL'. The 'ClamAV_DETECTION' heuristic specifically identifies it as 'Pdf.Exploit.Agent-36086'. The presence of eval() and String.fromCharCode suggests the JavaScript is obfuscated and likely designed to download and execute a secondary payload, which is a common attack vector for PDF exploits.

Heuristics 6

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)
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` `31aae6bea3e5248d3d3af95bf38bc8dea0b381e7cca3e965bf2b1739ba01b171`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	2785101 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 7 long base64-like blob(s).

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