MS-DOS D-Fend Reloaded file encoding "application/octet-stream; charset=binary" to ASCII in ubuntu

Question

I have an MS-DOS developed application in D-Fend Reloaded and its DB is stored into a DATABASE01.DAT file. I tried to determine the file type through file command in ubuntu terminal and I get:

DATABASE01.DAT: application/octet-stream; charset=binary

I tried a simple:

cat DATABASE01.DAT | tr -d '\0' | head -1 

And I get some data:

AAA                     362887637       �   �       FEDERES                            ATTIVI 309                                 FAUSH                  �6Cat

The problem is that some fields appears as � and I cannot find out which field separator it outputs (looks like a 14 length spaces)

I if run hexdump -C DATABASE01.DAT:

00000000  50 49 45 52 49 4e 49 20  49 4f 4c 45 20 20 20 20  |AAA    |
00000010  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000020  20 39 34 30 31 34 32 36  31 20 20 20 20 20 20 20  | 362887637       |
00000030  06 00 02 00 7b 07 14 00  08 00 ca 07 07 00 09 00  |....{...........|
00000040  ca 07 20 20 20 20 20 20  20 50 45 52 55 47 49 41  |..       FEDERES|
00000050  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |

How can I convert it to a plain text file?