PDF Advanced Scans Technical Breakdown

PDFs are often used as containers for malicious activities or forged documents. Our PDF Advanced Scan performs an object-level audit. We detect incremental updates (multiple %%EOF markers) which often hide previous versions of a document, scan for embedded JavaScript triggers (/JS, /JavaScript), and identify suspicious object streams.

The Science & Methodology

Our verification processes are built on standard forensic methodologies. By analyzing data at the architectural level, we ensure that every result is backed by mathematical certainty rather than simple AI-generated guesses.

PDF structure allows for "increments"—essentially versions hidden within a single file. We peel back these layers to reveal the document's true history. Forensic Methodology Overview

Operational Use Cases

Contract Verification

Detect if a signed PDF has been modified after the digital signature was applied.

Secure File Receipt

Scan incoming invoices or documents from unknown senders for malicious "OpenAction" scripts.

Historical Audit

Reveal previous versions of a document that the sender attempted to hide via incremental saves.

Key Forensic Capabilities

• Incremental revision detection: Advanced algorithmic validation for ensuring digital integrity.
• JavaScript payload scanning: Advanced algorithmic validation for ensuring digital integrity.
• Embedded object extraction: Advanced algorithmic validation for ensuring digital integrity.
• Launch action (/Launch) audits: Advanced algorithmic validation for ensuring digital integrity.
• Obfuscated object stream analysis: Advanced algorithmic validation for ensuring digital integrity.