Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e08cf3c75264f2…

MALICIOUS

PDF

19.6 KB
MD5: 1a8a82b2cd058c6e5ed6ced725c01655 SHA-1: 965fb77d14fb5114a5f62bfdef2766a6e704be0f SHA-256: 74e08cf3c75264f2de0c5151265a3bd5cb46d7f7f903f54b15e90f3ebb0f3bbd
126 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including critical ClamAV detection (Pdf.Exploit.Dropped-78) and a high ML score, indicating malicious intent. The presence of an embedded script payload and an embedded file suggests the PDF is designed to exploit vulnerabilities and download or execute a secondary payload. The embedded URLs, while mostly benign or unknown, are part of the document's structure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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
  • 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
a5ef3ec9bacffa600597b89b19d62574919984170aeba9c028f74268c663d757
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 19317 bytes