If I had to guess, that's what you get after you turn code into binary. Looks like something involving a GUI. Reverse engineering a binary is not a simple thing.
What is the filename extension of the file? (e.g. .docx, .bin, .pdf, .dll etc.)
Simple character sequences sometimes don't get mangled when turned into hex files - you can spot "spon.ap", "data", "TitleBar", "Accent", "Menu", "FullFade" etc. in that file which are unlikely to occur by chance. Can you see any more (particularly near start and end)? They might give a clue.