OSINT URL Analysis: Web Intelligence & Phishing Detection

Overview#

A malicious URL in a phishing email is often the only indicator an analyst has before a user clicks it. The question is always the same: is this link safe, and if not, what is it trying to do? Email security gateways, SOC teams, and incident responders need that answer in seconds, not minutes. URL Analysis aggregates reputation data from 47+ threat feeds, renders the page in a sandboxed browser, follows every redirect, and captures a screenshot, so analysts get a complete threat picture without exposing themselves or their systems to whatever the link contains.

With hundreds of millions of previously scanned URLs in the historical database, the platform supports both real-time analysis of fresh threats and retrospective investigation of web-based activity.

Key Features#

• URL Reputation Scoring: Multi-source threat assessment aggregating intelligence from 47+ feeds including domain age, registration data, hosting infrastructure, SSL/TLS analysis, and DNS configuration
• Real-Time Content Analysis: Live URL fetching, rendering, and analysis including page content inspection, redirect chain following, embedded resource examination, and JavaScript behaviour assessment
• Phishing Detection: Identify credential harvesting pages, brand impersonation, and social engineering content through visual similarity analysis, form detection, and brand keyword matching
• Malware Detection: Detect drive-by downloads, exploit kit landing pages, malware payloads, and malicious redirects through behavioural analysis and threat feed correlation
• Screenshot Capture: Automated page rendering and screenshot capture for investigation documentation, evidence preservation, and visual analysis without exposing analysts to malicious content
• Redirect Chain Analysis: Follow and document complete redirect chains from initial URL through intermediate hops to final destination, identifying cloaking and evasion techniques
• Domain and Infrastructure Context: Enrich URL analysis with domain registration data, hosting provider information, SSL certificate details, and historical reputation for comprehensive threat assessment
• Bulk URL Scanning: Process large URL lists from phishing reports, email security gateways, and log analysis with automated classification and priority scoring

Use Cases#

• Email Security: Analyse URLs extracted from suspicious emails to detect phishing, malware distribution, and credential harvesting before users are exposed
• Incident Response: Rapidly assess URLs discovered during security incidents to determine threat nature, scope, and infrastructure connections for containment decisions
• Threat Hunting: Proactively scan URLs from network traffic, proxy logs, and DNS queries against threat intelligence to identify undetected compromises
• Brand Protection: Monitor for URLs impersonating organisational websites, products, or services with automated detection and evidence capture for takedown proceedings
• Security Awareness: Provide analysts and security operations teams with instant URL intelligence for informed decisions on blocking, alerting, and investigation priorities

Integration#

The platform integrates with email security gateways for automated URL scanning, SIEM platforms for log-based URL enrichment, SOAR platforms for orchestrated response workflows, and the broader Argus OSINT ecosystem for cross-domain intelligence correlation. URL indicators export via STIX/TAXII to OpenCTI and MISP for community threat sharing. Works with Cortex (TheHive) for analyst-driven enrichment and connects to certificate transparency monitoring for SSL-based domain correlation. Accessible through all 153 third-party provider integrations in the Argus provider orchestration layer.

Open Standards#

• STIX 2.1 / TAXII 2.1 (OASIS): URL threat indicators are modelled as STIX 2.1 Indicator SDOs using the url:value pattern and exported or ingested via an async TAXII 2.1 polling client, enabling bidirectional sharing with platforms such as OpenCTI and MISP.
• WHOIS (RFC 3912): Domain registration data, registrar, creation date, expiry, and nameservers, is retrieved for every analysed URL via a multi-provider WHOIS client and surfaced in the URL profile.
• DNS over HTTPS (DoH, RFC 8484): DNS record resolution (A, AAAA, MX, NS, TXT, and others) is performed over HTTPS using public resolvers (Cloudflare 1.1.1.1, Google 8.8.8.8, Quad9 9.9.9.9, OpenDNS) rather than plain-text UDP, preventing in-path observation of analyst queries.
• X.509 / Certificate Transparency (RFC 5280 / RFC 6962): TLS certificate details are captured and stored for each scanned URL, and scheduled ingestion from the public crt.sh certificate transparency log surfaces new subdomains and infrastructure changes relevant to the analysed domain.
• MITRE ATT&CK: Threat actors and campaigns discovered through URL analysis are attributed using MITRE ATT&CK technique and tactic identifiers, linking observed indicators to the broader adversary knowledge base.
• GraphQL: All URL analysis capabilities, profile creation, retrieval, and enrichment, are exposed through a typed Strawberry GraphQL API, consumed by the frontend and SOAR integrations.
• OAuth 2.0 / JWT (RFC 7519): All API endpoints require a signed JWT bearer token for authentication, with access-control checks enforced per query and mutation.

Last Reviewed: 2026-02-23 Last Updated: 2026-04-14