The software you're referring to appears to be a cracked version of Nitro Pro, a popular PDF editor. I want to emphasize that sharing or using cracked software can be against the terms of service of the software provider and may also be illegal.
"TorDigger" is a known distributor of pirated software repacks on various torrent platforms. A repack generally includes: Pre-Activated Installer nitro pro v85411 x64 with key tordigger repack
The specific version mentioned, Nitro Pro v8.5.4.11 x64, refers to a 64-bit iteration of the software, compatible with 64-bit Windows operating systems. This version, like others in the Nitro Pro line, aims to provide businesses and professionals with a robust toolset for working with PDFs. The software you're referring to appears to be