iMessage and Attached Files

Hello,

i have a security question. I recent received an email from an outlook.com.au account. I noticed the message preview in iMessage said “1 File Attached”. I know I did not open the message, though I can only say I only seemingly didn’t open the file (seemingly). However, I tapped and held the message to get a preview of it and noticed a .docx file titled “Bella Bumz” was sent?

Long story short, my question is: Do previewed texts automatically download or open the file as well?

I feel stupid for even previewing the message, but thought I was safe until I thought of the possibility that the word document could’ve been read by the GPU in background, thus running some malicious code. Similar but not exact to the Folina exploit.

Pictures:

[Image Edited by Moderator to Remove Personal Information]