The only way to reliably export Pagemaker documents (like .alb5 files) as PDF documents would be to use a proper version of Adobe Pagemaker. It will be very hard, if not impossible to convert PageMaker files without the program itself.
Convert Adobe PageMaker 5 document file to Adobe Portable document format.
We have found 2 software records in our database eligible for .alb5 to .pdf file format conversion.
Microsoft Windows software - convert alb5 to pdf on Windows
One of the first desktop publishing programs on market
Convert from alb5 file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned alb5 to pdf. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert alb5 to pdf on OS X
Mac version of once popular publishing program