He double-clicked it.
still target Office 2007 users because hackers know these machines are unpatched. If you receive a Word document via email or download a PowerPoint from an untrusted source, an exploit can install ransomware in seconds. microsoft office 2007 enterprise setup.exe download
If your goal is simply to open/edit .docx , .xlsx , or .pptx files without paying a subscription, you have excellent free and paid options. He double-clicked it