I just got the newest luatex 1.09, development id: 6884, from w32tex.org and ran some tests.
In the pdf there is the "binary" marker on the line after the pdf version missing. The uncompressed pdf starts like this: %PDF-1.5 3 0 obj << /Length 449 >> instead of %PDF-1.5 %ÐÔÅØ 3 0 obj <</Length 133 >> -- Ulrike Fischer https://www.troubleshooting-tex.de/
