PDF static analysis report

Static analysis result for SHA-256 71e5425de8c58ee4…

SUSPICIOUS

PDF

4.6 KB
MD5: edf4533cecf100a3095ccd272cb91e39 SHA-1: 2029cc24adededfbc0018281e514f133e1f1d2f1 SHA-256: 71e5425de8c58ee48e88e92a69be3fa95a2a5bfcec05cfa76c98ad1b15b02c32
50 Risk Score

Malware Insights

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

The PDF file contains an embedded JavaScript payload, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic and the extracted 'stream_000_off00000262.js' artifact. The ML classifier strongly flags this PDF as malicious, suggesting it is designed to exploit vulnerabilities. The presence of XFA form elements further supports the likelihood of exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off00000262.js
920d8ed229e9c971e9275ad784c8b2825a3f9657671311e6eddceae1cd6ede6a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x262 26160 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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