Excellent! I pulled the current version of poppler master (de3131ae38fc9442b198d4d7b0c57c6939ad66ce), rebuilt, and now Evince prints pops up an error bar ("The file could not be saved as “file:///tmp/evince-test/FormularioTransferencia-change.pdf”. / Document is encrypted") rather than saving a zero-byte file.
Excellent! I pulled the current version of poppler master (de3131ae38fc94 42b198d4d7b0c57 c6939ad66ce) , rebuilt, and now Evince prints pops up an error bar ("The file could not be saved as “file:/ //tmp/evince- test/Formulario Transferencia- change. pdf”. / Document is encrypted") rather than saving a zero-byte file.