Using repacked software usually bypasses official licensing, which violates Microsoft's Terms of Service and can lead to security vulnerabilities as the software may not receive official security patches.
I should also think about the history. Why is there a repack? Maybe because the official version is outdated and not widely available anymore, or users want a specific configuration. Wesley Ferreira is likely an individual or a community member known in specific forums for creating such repacks. Maybe he has a reputation for providing reliable, clean repacks. But again, that's against Microsoft's TOS. office 2013 ptbr x64 wesley ferreira repack