Instead of risking your device with unofficial software, consider these safe and official options: Download Microsoft Office 365 for Windows and Mac

Microsoft Office 2013 is a copyrighted commercial software product. There is no legitimate, legal "portable version" released by Microsoft. Any website offering a "portable" or "cracked" version of Office 2013 for free is almost certainly distributing pirated software, which may contain malware, spyware, or ransomware. Downloading and using such versions violates Microsoft’s licensing terms and copyright laws.