Malicious PDF — malware analysis report

Static analysis result for SHA-256 059c0e088a4d77bf…

MALICIOUS

PDF

19.3 KB
MD5: 037a6c336b70bd810708a77b9081e925 SHA-1: 3006096b5692cf971842aa5a7a57e5ce21ac9e76 SHA-256: 059c0e088a4d77bf898734024a9a124027113ca121cd6c29ae9bd43a3c87c121
116 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ML classification and ClamAV detection, indicating it contains malicious content. The presence of an embedded script payload and an embedded file strongly suggests it's designed to exploit vulnerabilities and execute a secondary payload. The benign URLs 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
2a46fab3956e8855d13a1026f8be25ddad5e1f91809163a500b75606ceafc721
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18983 bytes