Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9cd72082bfcd5b…

MALICIOUS

PDF

45.4 KB
MD5: 444961079016709eade2baaac03219d6 SHA-1: 629dc62f67f6cc76fbd587409ff5230961e2340d SHA-256: df9cd72082bfcd5b53738c83bbcd38b1234204c8df6c2ec48fde954dbfa1a83c
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The presence of XFA forms and the ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further suggest malicious intent. The embedded JavaScript likely attempts to download and execute a second-stage payload, although the exact mechanism is obscured. The extracted URLs are related to XFA and Adobe, but their reputation is unknown or benign, providing limited direct threat intelligence.

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
b40e23721e9c1f95cb85facbe5aa95401f557d7cef1b9ac94bb4888b2038c18a		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1E3 3748 bytes

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