Malicious PDF — malware analysis report

Static analysis result for SHA-256 006ff7698b68de8f…

MALICIOUS

PDF

46.3 KB
MD5: b85e0dc9bbdc132d9d2680b03a908b70 SHA-1: 472d0ceb1e41af33510fff007be456b44a790d1c SHA-256: 006ff7698b68de8fee40a8bae3479bd9542041beaf0fa99e9be74951477e90b0
176 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, flagged by multiple heuristics as an exploit cluster and obfuscated. This JavaScript is designed to download and execute a second-stage payload. The ML classifier and ClamAV detection further support the malicious nature of the file, indicating a likely exploit delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9647

Heuristics 6

  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
  • 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
de6c55b5ad09c0d3aa762ae694bc1f8b178f145c74fbdee6866e40b3ce687ca4		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1E0 4656 bytes

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