Malicious PDF — malware analysis report

Static analysis result for SHA-256 20edaf26f6d4dcd0…

MALICIOUS

PDF

15.4 KB
MD5: 162eeeba7572484389ed29707225e798 SHA-1: 48adda508dcaf4221b0104e31cd55ed4c53987bf SHA-256: 20edaf26f6d4dcd05a561bd0249f1a51a916ce4c17db3241a9c54aff70c883e3
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The PDF sample was flagged by a machine learning classifier with high confidence as malicious. Heuristics indicate the presence of an embedded script payload and an embedded file, suggesting an attempt to deliver a secondary malicious artifact. The document body contains obfuscated JavaScript-like code, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Embedded script payload in PDF stream medium 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
c71e075332a54207c6fad05791b13c5c00dcd8a75059c918fbc61b41fbbdf8e9		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 15009 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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