If this is for work, check your internal Palo Alto Knowledge Base or IT portal for the specific "PDLM" module update.
Scientists often use specialized clients to download Data Archives that contain complex metadata and raw spectral data.
If you found this specific string on a third-party site or in an email:
A "TNK" could refer to a specific "Task" or "Toolkit" identifier within a research project. ⚠️ Safety & Verification
Before opening any file, use a reputable tool like the Microsoft Defender to check for unrecognized apps or threats.
This may be a shorthand for "Tank," a common name for storage containers or data repositories.