What's the reason behind this?

[Yeah No]

Hello.

A client sent me an image but when viewed in outline mode, it's made up of a lot of bounding boxes.  Can someone explain why this happens?

Is it a way he/she saved the file?

Compatability issue with Illustrator?

Thanks!

[Doug A Roberts]

What file type is it? PDF?

[Yeah No]

Yes, PDF

[Monika Gause]

Has it even been created in Illustrator?

[Yeah No]

By the looks of it, no.