Adding an extention to a file with no extention

Hi,

I am using hazel to sort my invoices.
Some PDF invoices from a supplier I receive do not have extentions though GMAIL can read them and identifies them as PDF.

Once on my computer they aren't identified as PDF and do not have extentions :shock:

I tried to mlds it with terminal and here is what is says :

I assume there is no extention even hidden ? (I tried to get hazel toggle to make it visible : no change)

How can I tell hazel to add the .pdf extention ?

Is it possible to add the pdf extention only to this type of files ? like : if no extention then : add .pdf ?

Regards

You can use the Rename action. Use a pattern like: (name).pdf