List & Label software has extensive export capabilities and of course it supports exporting to PDF. So you might be able to export your *.ll files as *.pdf documents with it.
Convert List & Label preview file to Adobe Portable document format.
We found one software available in the database for this conversion.
Microsoft Windows software - convert ll to pdf on Windows
A report generating software
Convert from ll 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.