Malicious PDF — malware analysis report

Static analysis result for SHA-256 84119fb31485aefd…

MALICIOUS

PDF

5.6 KB
MD5: a48a706d398f17e63e35f5f7f93011c7 SHA-1: 29f31eaeb5ccf31874c2ddf77d6eaf785ae285f5 SHA-256: 84119fb31485aefdea3104ea69b1a39447d609494f2da2b6586ed03ef208e375
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF contains an embedded script payload and an embedded file, strongly indicating malicious intent. The ML classifier also flagged this PDF with high confidence. The embedded file, 'embedded_file_obj0008.bin', is likely the second-stage payload. No specific family could be identified.

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
779d1d690d6d9db56995de50f3727d481ae54956caaec50b5225764274a26e1f
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x78 5074 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).