Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4afe7ff73d5708…

MALICIOUS

PDF

15.4 KB
MD5: 0a3749a930647cf80a1433a4568be13c SHA-1: 91190c599bc43b542f32463cdaab94c8bb7fcbc5 SHA-256: ed4afe7ff73d570877d815ed2500643f19cc9da1a4916e4a431113a38eb4d779
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: Malicious Attachment

The PDF sample was flagged as malicious by an ML classifier with high confidence. Static analysis revealed an embedded script payload and an embedded file, indicating an attempt to deliver a secondary malicious artifact. The document body contains obfuscated JavaScript-like code, further suggesting 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
88438193253c155ed524f80faee75250e78b36a2888025c0819f295109d3b476		 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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