Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b63256c6eae694b…

MALICIOUS

PDF

45.2 KB
MD5: f5ee293bff7e910cd5072be248780e4c SHA-1: 29c0d2999f77c577240b57aac041d3fbc5fb5424 SHA-256: 1b63256c6eae694b238eeb07b485ffe80702c855c607f2b2cb9e8168f90d9e28
114 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier also flagged this PDF as malicious with a high score. While the document body is heavily obfuscated and unreadable, the presence of JavaScript suggests an attempt to perform malicious actions, likely involving the execution of further payloads or exploitation of vulnerabilities. The embedded URLs are related to XFA forms, which can sometimes be used as an attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9615

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
fb78041def0665360792ffac3ccad1ea5de85dab76d88b91231ad6fb6b34cb22		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1F0 3705 bytes

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