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A hybrid structural-contextual framework for malicious URL detection based on graph attention networks and knowledge distillation

Aug 2026 · Journal of Military Science and Technology · 0 citations · 8 references

TL;DR

This paper proposes a structural-semantic integration framework leveraging Graph Attention Networks and Knowledge Distillation for robust multi-layer malicious URL detection, conceptualize raw URLs as character-level directed graphs to extract intricate structural patterns.

Abstract

Malicious URLs are evolving with increasingly sophisticated obfuscation techniques, posing a persistent threat to global cybersecurity. Traditional deep learning methods still struggle to identify the intricate topological characteristics and hidden structural dependencies inherent in URL sequences. This paper proposes a structural-semantic integration framework leveraging Graph Attention Networks and Knowledge Distillation for robust multi-layer malicious URL detection. We conceptualize raw URLs as character-level directed graphs to extract intricate structural patterns, fused with high-level lexical context distilled from a pretrained DistilBERT model. A hybrid loss integrating Kullback-Leibler divergence and Negative Log-Likelihood balances computational efficiency and predictive performance. Experimental results on large-scale, imbalanced datasets show our framework achieves 98.86% accuracy and 98.16% F1-score.

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