Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad57011aa574cde…

MALICIOUS

PDF

11.9 KB
MD5: 4179a2f58ec54ad455bc795618b2c3ff SHA-1: a65de8f466d3450c3de41294891b355abd9f0604 SHA-256: 0ad57011aa574cdefaf5803e58fc10516d1edccbf6a7697c40c5ba8d1f6ae799
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 a machine learning classifier and ClamAV, 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
d191fcda3d9927cea802d54fb8ddc8e649da345d458085f9021698c42cf09f7b
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11456 bytes