PDF malware analysis — malicious · f0d29b3952222e74

MALICIOUS

PDF

226.4 KB

MD5: afd17aed7fc2adb3fede8400d56b6af2 SHA-1: 61f8273413041266f526980a0a45e9d9170e9448 SHA-256: f0d29b3952222e74c9c91b0d916436641c7f722f42e86026ad5106dc7d25dc69

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL and PDF_FROMCHARCODE firings suggest that the JavaScript is obfuscated and uses eval() and String.fromCharCode() to execute code. The CLAMAV_DETECTION heuristic identifies this as Pdf.Exploit.Agent-36086. The extracted artifact javascript_obj0006_000.js is likely the payload. The overall attack pattern is consistent with a malicious PDF designed to exploit vulnerabilities and download further malicious content.

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` `b2daae67d042f9b50a1560ceff4c1798d97b8628c09ef9e0b935d9eb9b139f27`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	322731 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 10 long base64-like blob(s).

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