Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13a22f446d09228…

MALICIOUS

PDF

46.0 KB
MD5: 7aad6c106b9f7c4a6b0512fd7b5d45a0 SHA-1: d065d530b76fe0341dd4766d7b22be166e798790 SHA-256: a13a22f446d092284c1eceef9e63ba9a2b89e61893fa37e0dfb6bd5df5dffbf3
84 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent. The embedded JavaScript is likely responsible for executing malicious code, potentially downloading a second-stage payload. The presence of JavaScript actions and streams within a PDF commonly points to an attempt to exploit vulnerabilities or deliver malware via a malicious document.

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
f64c5fc6c49ac86b2c8278252b94da1603266489ff7fe4605698c5c67eb89828		 pdf-javascript-stream PDF /JS object 12 at offset 0xA213 4300 bytes

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