LibreOffice 5.2.2 (from from http://ppa.launchpad.net/libreoffice/ppa/ubuntu xenial main)
If I export any .odt to pdf and get it scanned at virustotal.com, it doesn’t get a green signal possibly because of:
This PDF file contains an open action to be performed when the document is viewed. Malicious PDF documents with JavaScript very often use open actions to launch the JavaScript without user interaction.
However, if I open exactly the same .odt file in another Linux word processor, Abiword 3.0.1 from the Ubuntu software center, and save that as a .pdf file, virustotal.com reports that the file is
Probably harmless! There are strong indicators suggesting that this file is safe to use.
This is not specific to any one .odt file. And just to clarify, the .odt file is actually just plain text, containing nothing that can conceivably be seen as code, javascript or anything else.