Check ALttPR Game File CRC (z3r)

You likely need a headerless version of the game file that is required. This tool can remove the header for you.
The following is the known valid CRC code for the required game file.
You can use it to verify your legally-obtained game dump.

3322EFFC: Zelda no Densetsu: Kamigami no Triforce (SNES) (1.0) 

This tool can also help try to get the permalink to an already randomized game file.

ROM info for the file you provided:

Filename: {{file.name}}
Headered: {{isHeadered | yesno}}
CRC32: {{crc | upper}} (headerless: {{calcCrcHeaderless | upper}})
Format: {{format}}
Burn-in: {{burn}}
Version: {{generator.version.major}}
Race/Tourney: {{isTourney | yesno}}
Spoilers: {{!isTourney | yesno}}
Seed ID: {{permalink.seed}}
Z3 Logic: {{z3logic}}
SM Logic: {{smlogic}}
Z3 Weapons: {{weapons}}
Morph Location: {{morph}}
Players Mode: {{config.field.gameMode}}
World ID: {{world.id}}
World Name: {{world.player}}
World Guid: {{world.guid}}
Seed Guid: {{seed.guid}}
Seed API: API Link
Permalink: {{permalink.url}}
Code: {{permalink.code.decoded}}
Filesize: {{file.size}} bytes ({{parseInt(file.size/1024)}} kbytes, {{parseInt(file.size/1024/1024)}} mbytes)

{{genError()}}
This seems to match.
The file you selected looks like it could be a compressed file.
If it's a .zip, your operating system should be able to extract it by right-clicking.
If it's a .7z, you'll need 7-Zip (which is primarily a Windows application) to extract it.
If it's a .rar, you'll need WinRAR (which is primarily a Windows application) to extract it.