How to convert bpnueb to pdf file

As far we know, no dedicated converter for BPNUEB ebooks exists, which makes prospect of any bpnueb conversion, including bpnueb to pdf conversion, pretty low. Nonetheless, it is possible that the PNUEB Viewer offers print function, which should be all you need to get PDF version. Just use a virtual PDF printer for that. Another workaround would be to simply make a print screen of opened .bpnueb file and make PDF from that.

Open BPNUEB file    Open PDF file