That would require opening Word 2007 → New Blank Document → Save as .doc or .docx. I can’t generate or host a file directly here, but I can describe how to create it.
If you just need to open old .docx or .xlsx files, don’t risk the Google Drive ISO route. Try these instead: office 2007 iso google drive
If you need Office 2007, here are the only safe and legal methods. That would require opening Word 2007 → New