It seems to include random globs of binary data, like a big chunk of nulls from 0x5004 to 0x54D, another at 0x1100E to 0x117C5, etc. There's over a megabyte of them total in the 13 MB file when I wget it. (Maybe my downloads were corrupted, though.) But you have weirdness like:
thats how NFS appends work :)