FileHint
JAEN

.doc

High risk

Microsoft Word 97-2003 Document

The pre-2007 binary Word format (Compound File Binary). Still circulates in government and SMB workflows and carries a high malware-delivery risk because of embedded macros.

MIME types

  • application/msword

Category

document

What opens this file

  • Microsoft Word
  • LibreOffice Writer
  • Google Docs

How to open by OS

Windows

  • Word, LibreOffice Writer.

Mac

  • Word for Mac, LibreOffice Writer, Pages compatibility mode.

Linux

  • LibreOffice Writer.

Ios

  • Word Mobile, Pages.

Android

  • Word Mobile, Google Docs.

Safety notes

  • Legacy doc files can run VBA macros and remain a primary delivery vector for campaigns like Emotet. Never 'Enable Content' on an unexpected .doc.
  • Keep Protected View enabled — enforce it via Group Policy on managed devices.

Common mistakes

  • Saving as .doc locks you into legacy compatibility mode. Switch to .docx unless there's a specific reason.
  • Renaming .doc to .pdf doesn't change the bytes. Use the File Signature Checker to verify the real format.

Related extensions

References