Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2bd97ea3a1289e…

MALICIOUS

PDF

5.7 KB
MD5: db9e4dbfa578d8e75030cb8da7eefcb6 SHA-1: 2883bdaf2c705e09730ee907b78b6b9c28b000e9 SHA-256: 9d2bd97ea3a1289e3ecf039fc983f111344d8f0f754aeb8f605b9291248098ce
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious by an ML classifier and contains an embedded script payload. This suggests the document is designed to exploit a vulnerability or trick the user into executing malicious code. The embedded file artifact, 'embedded_file_obj0008.bin', is likely the secondary payload.

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
eb52c53e93e36129bb478524ba5d63eecd62a84d973025a60b31b0179850fabe		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x78 5094 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).

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