Acrobat Reader is not an Electron app. It is using Chromium Embedded Framework, so it's not using native UI. But it also isn't Electron. I don't see any Node.

Acrobat Reader is not an Electron app. It is using Chromium Embedded Framework, so it's not using native UI. But it also isn't Electron. I don't see any Node.js anywhere in Acrobat Reader.