This is the most concrete part of the string. Nippyfile is a popular, high-speed file-hosting service. It is often used for sharing large archives because it doesn’t require registration and allows for relatively anonymous uploads.

Searching for and clicking links associated with these specific "exclusive" nippyfile strings carries high risks:

Here is a conceptual "paper" or summary exploring the digital footprint of this specific string: Analysis of the "YVM AJB" Digital Artifact