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SKILL verified Apache-2.0 Self-run

Analyzing Malicious Url With Urlscan

skill-killvxk-cybersecurity-skills-zh-analyzing-malicious-url-with-urlscan · by killvxk

URLScan.io 是一项用于扫描和分析可疑 URL 的免费服务,可在隔离环境中捕获网页的截图、DOM 内容、HTTP 事务、JavaScript 行为和网络连接。

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Install

$ agentstack add skill-killvxk-cybersecurity-skills-zh-analyzing-malicious-url-with-urlscan

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • Prompt-injection patterns
  • Secret / credential exfiltration
  • Dangerous shell & filesystem operations
  • Untrusted network calls
  • Known-malicious package signatures

What it can access

  • Network access No
  • Filesystem access No
  • Shell / process execution No
  • Environment & secrets No
  • Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

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Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

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About

使用 URLScan 分析恶意 URL

概述

URLScan.io 是一项用于扫描和分析可疑 URL 的免费服务,可在隔离环境中捕获网页的截图、DOM 内容、HTTP 事务、JavaScript 行为和网络连接。本 skill 涵盖使用 URLScan 的 Web 界面和 API 调查钓鱼(phishing)URL、凭据收割页面和恶意重定向,而无需将分析师的系统暴露于风险中。

前置条件

  • URLScan.io 账号(提供免费层级,自动化操作需要 API key)
  • Python 3.8+ 及 requests 库
  • 了解 HTTP 协议和 Web 技术
  • 熟悉钓鱼 URL 模式

核心概念

URLScan 功能

  1. 安全浏览:在隔离的 Chromium 实例中渲染 URL
  2. 截图捕获:渲染页面的可视快照
  3. DOM 分析:JavaScript 执行后的完整 HTML 内容
  4. 网络日志:页面发出的所有 HTTP 请求(HAR 格式)
  5. 证书分析:SSL/TLS 证书详情
  6. 技术检测:识别 Web 框架和库
  7. IP/ASN 映射:基础设施情报
  8. 裁决(Verdict):社区和自动化分类

钓鱼 URL 危险信号

  • 新注册域名(< 30 天)
  • 免费托管服务(Wix、GitHub Pages、Firebase)
  • 隐藏最终目标的 URL 短链接
  • 过多的子域名层级(login.microsoft.com.evil.com)
  • 品牌名在子域或路径中,而非在域名中
  • 非标准端口
  • Data URI 或 Base64 编码内容
  • JavaScript 密集、HTML 极少的页面

实施步骤

步骤 1:向 URLScan 提交 URL

Web:访问 https://urlscan.io 并提交可疑 URL
API:POST https://urlscan.io/api/v1/scan/
     Header: API-Key: your-api-key
     Body: {"url": "https://suspicious-url.com", "visibility": "private"}

步骤 2:分析结果

  • 查看截图中的品牌仿冒(brand impersonation)情况
  • 检查重定向和最终目标 URL
  • 检查 DOM 中的凭据输入表单
  • 审查网络请求中的数据外泄端点
  • 检查 SSL 证书有效性和签发者

步骤 3:提取 IOC(失陷指标)

  • 已联系的域名和 IP
  • 重定向链中的 URL
  • 页面资源的 SHA-256 哈希
  • JavaScript 文件哈希

步骤 4:与威胁情报交叉比对

使用 scripts/process.py 自动化 URL 扫描、提取 IOC,并与 VirusTotal、PhishTank 和 Google Safe Browsing 交叉比对。

工具与资源

  • URLScan.io:https://urlscan.io/
  • URLScan API:https://urlscan.io/docs/api/
  • VirusTotal URL 扫描器:https://www.virustotal.com/
  • PhishTank:https://phishtank.org/
  • Google Safe Browsing:https://transparencyreport.google.com/safe-browsing/search
  • Any.Run:https://any.run/(交互式沙箱)
  • Hybrid Analysis:https://www.hybrid-analysis.com/

验证

  • 通过 API 成功扫描可疑 URL
  • 提取截图并识别品牌仿冒
  • 记录完整重定向链
  • 从扫描结果生成 IOC 列表
  • 将发现与至少 2 个威胁情报来源交叉比对

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.