Malicious PDF — malware analysis report

Static analysis result for SHA-256 4455774dfc18def7…

MALICIOUS

PDF

44.6 KB
MD5: 3e85b9c5e3e4dfd8e9f29283a7cdb816 SHA-1: 53050df3b7d9206705506516607b7b84ba903d35 SHA-256: 4455774dfc18def7795f3c96a2a1c872fcc581b5aef995128588ff710f945aa0
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent. While the document body is unreadable and no specific malicious script actions can be confirmed due to obfuscation, the presence of JavaScript in a PDF is a strong indicator of an exploit attempt. The embedded URLs are related to XFA forms, which are often targeted for exploitation.

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
a3cfef083b0f9a750beb01359d44011bf71cb8f6da26f93b4d54503c5976a56d		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1DD 3227 bytes

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