It should be possible to export the packaged Microsoft Publisher publication (.puz) to PDF format once the recipient of the file opens it using Publisher. Just keep in mind that exporting the document to PDF will prepared for printing and not for further editing in Publisher.
Convert Microsoft Publisher packed document to Adobe Portable document format.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert puz to pdf on Windows
A desktop publishing application included in Microsoft Office
Convert from puz file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.