Cracked installers are a favorite vector for viruses, trojans, keyloggers, and crypto-miners. Security firms routinely find backdoors in such packages.
MS Office 2007 is no longer supported by Microsoft (support ended in October 2017). Using it poses significant security risks:
"Preactivated free" versions are almost always:
If you have a valid license key from a genuine retail copy or old volume license agreement:
Remember: Even with a valid license, the software is out of support. Run it only on isolated, non-internet-connected machines (e.g., industrial control PCs).