I kept getting “business proposals” and “invoices” by email that looked a bit too shady to open. Most of them were PDFs, which as many of you know can hide embedded scripts, phishing links, or even malware.
I wanted a way to safely see what’s inside those files without actually opening them on my own computer. I couldn’t find any service that did exactly that, so I built one: Seguradoc.
It opens PDFs inside a sandbox, generates image snapshots of each page, and uses Mistral AI to run OCR and produce short summaries of image-based scanned PDFs. It also checks any detected links or QR codes against URLhaus for known phishing or malware sources.
This comes from a real problem I had, as some of these PDFs were actually malicious containing phishing attempts. These are directed and personalised attacks.
Of course your browser sandboxes these PDF files but I'd prefer not opening these files at all in my computer - being sandboxed by the browser or just using MacOS preview.