Malicious PDF — malware analysis report

Static analysis result for SHA-256 53780c6e95abc5fa…

MALICIOUS

PDF

6.1 KB First seen: 2026-05-10
MD5: 1e80d9666463c7150efbff905a95ee9d SHA-1: dedf5a4ab23740f097fb58960dc1db31e5cd8cd8 SHA-256: 53780c6e95abc5faaf50c2e2b55051ef7bd3fec974ff3a516f9468795c5683a1
148 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF document contains embedded JavaScript, identified by PDF_JAVASCRIPT and PDF_JS heuristics. A high-severity PDF_EVAL heuristic indicates the use of eval(), a common technique for obfuscating and executing malicious JavaScript. The script likely downloads and executes a second-stage payload, though the specific URLs are benign. No document body text was available for analysis.

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
    eval(this.info.title);
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00001672.js decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1672 167 bytes
SHA-256: 57530ac37e5fd237772e9fd23e91d19e95cec2db289f866d79d85042de0face4
objstm_0023_00.bin pdf-objstm-decoded PDF /ObjStm 23 0 obj (inflated) 351 bytes
SHA-256: a887963947dd5325bbe49980bd16be762578d96c2eb550ccb26b43493269ec52

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