mjhjmtu

I'm trying to install a program, with extension *.linux64. I'm using a linux machine with x86-64 architecture.

However, when I run ./program.linux64, I receive:

./program.linux64: Exec format error. Binary file not executable.

I changed the file permissions to chmod 777 thinking that the problem were the permission, thus now with ls -l, I have:

-rwxrwxrwx .... program.linux64

But I still have the same error; how can I install this program?

NOTE: the file is not compressed (I cannot unzip or tar it)

UPDATE (from comments):

Running file on it says it's "data":

$ file program.linux64
program.linux64: data

Running hexdump -C program.linux64 | head -8, it returns:

00000000 81 29 7f 72 43 3a 5e a3 63 33 67 5e 25 7a 2a 64 |.).rC:^.c3g^%z*d|
00000010 36 94 75 44 b2 c0 56 6b 67 91 5e 33 0a fa 24 b9 |6.uD..Vkg.^3..$.|
00000020 c0 f1 dc 46 af 67 76 dc d7 d4 1a 72 3f c8 65 fe |...F.gv....r?.e.|
00000030 6f 47 90 d8 88 ce ae dd 01 8f 79 c9 3e 10 c8 f2 |oG........y.>...|
00000040 27 43 52 b6 2d 4e ab 4b c3 93 10 1a 6a 5d 5c 5a |'CR.-N.K....j]Z|
00000050 3c 33 1a 37 5b 4f e7 00 30 95 1c 4b 10 a4 8d eb |<3.7[O..0..K....|
00000060 56 fe ef 8c 7b a5 ca aa 65 bd 34 bf f0 e8 30 af |V...{...e.4...0.|
00000070 9f 32 c9 6e 96 a4 9b ed 87 11 1e f9 94 3b b4 9c |.2.n.........;..|

When file says it's data (you've posted in a comment that it does), it basically means that it's not a file that file recognises, especially it's not an executable or compressed with an known (to file) algorithm. You'll have to go back to where you got that file and see if they have any instructions.