1. Open Metadata
Choose the PDF to see its current title, author, subject and keywords.
2. Edit or strip
Correct the fields, or remove all metadata before sending a file outside your organisation.
3. Content too
Metadata is only half the story. To remove names or numbers on the page, use Redact PDF.
Questions
Why does the title matter?
Browsers and search engines often show the PDF title instead of the file name.
Related: Remove personal details from a PDF