The keyword you provided is a red flag for counterfeit software. No legitimate Microsoft distribution uses swdvd9winserverstdcore2025 as a contiguous string.
Microsoft often bundles both "Server Core" and "Server with Desktop Experience" (GUI) in the same ISO. You must choose the specific edition during the initial setup. swdvd9winserverstdcore2025
If your file does not match that pattern, you are dealing with a fake. The keyword you provided is a red flag