Hi @thiagorangel
Thanks for response and sharing Defender results.
The “tcpdf barcodes” one – this is a false positive. It’s caused by the very specific code in the file that in a way follows certain “patterns” that are very common among various infections. Yet, it’s a “pattern” only and the code itself is not malicious (it’s as it originally is in the plugin).
As for other three – they all are marked with “file appears” to be modified but outlined differences are slight and don’t seem to be in any way malicious either.
I’m not much familiar with those particular plugins but it looks like differences related to either “free vs premium version” cases or plugins being outdated (or modified by you/your developer on purpose). But they don’t carry any malware as far as I can see.
I’d still recommend making sure that everything on site is up to date (WordPress core itself, the theme and all the plugins) but other than this, the files seem fine.
We can also give them another look if you want to (those three as tcpdf one is fine for sure) but you’d need to fist download those files from server – not the Defender log but the actual files – and then put them all as zip file on your Google Drive, Dropbox or similar and share link to that zip with us.
Kind regards,
Adam