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The portable executable DelphiVideoDownloader.exe — no installation required, just download and run — is scanned by 70+ independent engines on VirusTotal. A single heuristic engine — SecureAge — flags it as “Malicious”; every other engine, including Acronis (Static ML), reports it clean (“Undetected” means no detection — it is not a warning). One flag out of seventy-plus engines is the classic false-positive pattern for download tools, and the reason is understandable: this app's own fully visible features use techniques that heuristic/ML models associate with malware:

• The Link Catcher listens to the Windows clipboard (AddClipboardFormatListener) so every copied link is captured automatically — clipboard monitoring is also a clipboard-hijacker malware technique, so it scores high.
• The HLS/DASH sniffer injects JavaScript into the embedded browser to intercept Fetch/XHR/WebRTC/PerformanceObserver requests — the same method info-stealers use.
• The built-in yt-dlp updater downloads a new yt-dlp.exe from GitHub, backs up and replaces the old one — downloading and replacing an executable is classic “dropper” behavior.
• The download engine opens up to 16 parallel connections and the binary is compiled with Delphi — a language over-represented in malware statistics, which further raises ML suspicion.

All of these are documented, user-facing features of this application — shown openly on this very page — not hidden payload activity. You can verify DelphiVideoDownloader.exe yourself via the VirusTotal links above.