Malicious PDF — malware analysis report

Static analysis result for SHA-256 e34bcc789aa0ac3e…

MALICIOUS

PDF

44.7 KB
MD5: 31ac526a4d59c0670786f348b54704ef SHA-1: c728ac303fbc19c17358c0f88999c3656ae12421 SHA-256: e34bcc789aa0ac3e09f4448db91e0d93972c27a1ed9002b57362a8e469624bac
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 the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection for Heuristics.PDF.ObfuscatedNameObject further suggests malicious intent through obfuscation. While the document body is unreadable, the presence of JavaScript points to an attempt to execute malicious code, likely to exploit a vulnerability in the PDF viewer or download a secondary payload. The embedded URLs are related to XFA forms, which can be leveraged for exploitation.

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • JavaScript action low 1 related finding 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/ In PDF document text
    • http://www.xfa.org/schema/xci/2.6/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.6/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
ff0ae958e3bbfd9d52c32df9b547a7718783f6ec765119468a7b3d36328a5631		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1E9 3283 bytes

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