Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c669c5155593ee…

MALICIOUS

PDF

18.9 KB
MD5: a94a5a0c0ac666d5373e67aaa92a75b4 SHA-1: fa81256030fd35a39ed04d2f902a5159970cff8c SHA-256: 62c669c5155593ee6aa3cdebc15860a216f990f3d0c6ffbccf4b652f1a73569e
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 multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-78'. The presence of an embedded script payload and an embedded file suggests the document is designed to exploit a vulnerability and download a secondary 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
e37f25c4d78ece7247923edec8c133ca0de430f867027b4a131da5fff380f508
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18620 bytes