RecentDocs

NTUSER.DAT\Software\Microsoft\Windows\CurrentVersion\Explorer\RecentDocs

RecentDocs is Explorer's global Most Recently Used list of files opened by the logged-on user, organized by file extension as individual subkeys. It persists each filename and a pointer to its Shell Link even after the source file is deleted — serving as a durable record of recent document interaction across any application.

Key Name RecentDocs\{.ext} — per-extension subkeys (e.g., .pdf, .docx) each containing an MRU order value and binary PIDL entries for the filenames
Trace Type Execution
Hive NTUSER.DAT
Last Write Time The per-extension subkey Last Write Time reflects the last time a file of that type was accessed — use it to build a file-type interaction timeline for the investigation window.
User Specific Yes  Strictly per-user — each profile maintains its own independent RecentDocs list.

Forensic Value

For more Info check out these Articles: LastVisitedPidlMRU, WordWheelQuery