Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ae9e945c86cbf5…

MALICIOUS

PDF

6.8 KB First seen: 2026-05-10
MD5: 4b1c4af7d4db05f8f48391f063759214 SHA-1: add1fe0e54003c1668e424e4a7694aef146e4bce SHA-256: e0ae9e945c86cbf5d2b6c67f8c05a6deaec69b51b27765a0383f86b9590fcdfc
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream at offset 0x76F is obfuscated and uses an unescape() call, suggesting malicious intent. While the specific payload or exploit is not clear from the static analysis, the presence of obfuscated JavaScript in a PDF is a strong indicator of a potential attack. No document body text was available for analysis.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 5

  • 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
    return unescape(etxvizy);
  • 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)
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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_002_off00000327.js decompressed-pdf-stream PDF FlateDecoded stream at offset 0x327 1231 bytes
SHA-256: 8b50be2df1eb8d362314afb2b0be0b867953986946aff5a5688379a175744075
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
objstm_0024_00.bin pdf-objstm-decoded PDF /ObjStm 24 0 obj (inflated) 331 bytes
SHA-256: 134e9f3df54595da4d8aa8001089805786bc40dfd2dc980ece7c8e2eebaa56eb

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