Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29ab5a5d6d55cbd…

MALICIOUS

PDF

15.4 KB
MD5: f121f816cdc5952261aa5443159924cd SHA-1: 180d3cb066d776ba7ca8c3dd798247821934023e SHA-256: e29ab5a5d6d55cbde87df4455ab956cab6643b91e1818c9a6ee6ca397012b5e3
68 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier with high confidence. It contains 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, suggesting the PDF is designed to exploit vulnerabilities and execute arbitrary code.

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
c1ecc4719a29ee4208ba9b72b4ef01a66dae70cfa3439798ee0f03509d9216b6		 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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