How do I recover (decrypt) the .txt or .pdf or .docx files which are infected and encrypted by ransomware?

After a ransomware attack, encrypted files like .txt, .pdf, or .docx can potentially be decrypted in a few different ways:

1. Backup: If you have a backup of your files that were created before the ransomware attack, you can restore your files from the backup without needing to decrypt them.

2. Decryption Tools: Some cybersecurity companies and experts develop decryption tools that can help decrypt files encrypted by specific ransomware strains. You can search online for a decryption tool that matches the ransomware that encrypted your files.

3. Check Law Enforcement Agencies: Law enforcement agencies like Europol’s “No More Ransom” project may have decryption tools available for certain types of ransomware. They sometimes offer these tools for free on their websites.

4. Consult a Professional: If none of the above methods work, you may need to seek help from a reputable cybersecurity professional or company. They may have advanced tools and techniques to attempt decryption, although this can be costly and not always successful.

Remember that there is no guarantee that all encrypted files can be decrypted, especially if the ransomware used strong encryption and the decryption key is not available.