Malicious PDF — malware analysis report

Static analysis result for SHA-256 72daf1685a00f4a7…

MALICIOUS

PDF

12.1 KB
MD5: 76acf8c8bb48d232d1d714088ae3be98 SHA-1: 7dca4f7f88799f370bb02fe6898056a26f220794 SHA-256: 72daf1685a00f4a7039d5a9aa584931099816e13c9050db82aaa63891b2171bc
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating it contains an exploit. The presence of an embedded script payload and an embedded file suggests the document is designed to deliver a secondary malicious payload. The benign URLs found are likely unrelated to the malicious functionality.

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 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 script payload in PDF stream low 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 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
e7d4e8e571f66bc7bc8db9d9cb74004f75a57e338a6fe1fb88ec5decad471d45
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11671 bytes