Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c13e7486d741aa…

MALICIOUS

PDF

6.1 KB First seen: 2026-05-10
MD5: 1c284c1108db8840f38b4118e87bf791 SHA-1: 10123de30bf14d4c9673b30d53d7fdbbd68abdd5 SHA-256: 27c13e7486d741aa0d0ef646b56988575a4fd6cbce49d2a1be7ca5f7c318f066
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a high-severity PDF_EVAL firing suggests that the JavaScript is obfuscated and likely uses an eval() call to execute arbitrary code. This pattern is commonly used to download and execute a second-stage payload. No specific URLs or other IOCs were extracted from the document body or embedded scripts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9761

Heuristics 4

  • JavaScript action low 2 related findings PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • 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.
    Matched line in script
    function pampam(cont){return eval(cont);}
  • 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. (matched inside decoded stream)
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns# In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objstm_0023_00.bin pdf-objstm-decoded PDF /ObjStm 23 0 obj (inflated) 377 bytes
SHA-256: b4a5b76bd066f44c2d209d03f8b61ee1aba0c38921f001b82465f8cd1ce15e85

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