Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc2fe027189c086…

MALICIOUS

PDF

44.8 KB
MD5: 953c0ed19190c754d2711c6b35d780d1 SHA-1: c0c561475063f697025ae2bf08802826c02cd96b SHA-256: bcc2fe027189c0866ffddda84ff2a005a70129bc2ad4d3005b836d30f4cf50ec
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF JavaScript and XFA forms. The ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent. While the document body is heavily obfuscated and unreadable, the presence of JavaScript points towards an attack pattern involving the execution of arbitrary code. The embedded JavaScript likely downloads and executes a second-stage payload, though the exact mechanism cannot be determined due to obfuscation.

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
272a5cc9aad59ff3caea5b37224ec3cd2b17c5e7a2e2a4eb5ac00aad252febba		 pdf-javascript-stream PDF /JS object 12 at offset 0xA228 3092 bytes

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