Malicious PDF — malware analysis report

Static analysis result for SHA-256 2870a2944a4c5294…

MALICIOUS

PDF

5.6 KB
MD5: 034122a54e7adc8933ccb9a12778dae0 SHA-1: 5995e30b0c11182717c6479a17753ea143c5c34b SHA-256: 2870a2944a4c5294252c69e529590aa56256c976eddc62ad2fe8134c16af987d
68 Risk Score

Malware Insights

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

The PDF file contains embedded script content, flagged by heuristics as a malicious payload. The ML classifier strongly indicates maliciousness. The embedded file 'embedded_file_obj0008.bin' is suspicious and likely contains the secondary stage of the attack. The XFA form and embedded file indicators suggest a delivery mechanism designed to trick the user into executing the embedded script.

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
d418e9985c45347767e9590e1c79cd59fce06d6cc5a42cbbf36beef98b7af8b4		 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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