Malicious PDF — malware analysis report

Static analysis result for SHA-256 588e7bfc07d962f5…

MALICIOUS

PDF

5.6 KB
MD5: c6b10aca83b243bb199873a1fea346bf SHA-1: df853af7bb66dd95a329764896c36155c5430470 SHA-256: 588e7bfc07d962f5a16fb78e4d52f3445da856272180563654fa8a10b862aed8
68 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded file 'embedded_file_obj0008.bin' is likely the second-stage payload. The document body's content appears to be obfuscated or corrupted, preventing a clear understanding of the lure.

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
c961eed392f0c661074a4c2b3a6e0adba19f931a9e564d5a17b6693e6053ec4c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x78 5065 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).

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