Malicious PDF — malware analysis report

Static analysis result for SHA-256 65dbdcc0dbcad108…

MALICIOUS

PDF

49.6 KB Created: 2020-12-23 02:28:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 427c505fdeb4e500217f47b9f953c921 SHA-1: 9683ddecb80502b3c5001eba12e9bb4d96389b2a SHA-256: 65dbdcc0dbcad1087c50d14463cfaaba0cdf0ee4528e74f0dfb37774bb862418
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9424

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffine.ru/strik?utm_term=retro+game+center%2528+enjoy+classic%252F+emulation+games%2529
    • https://silifasakesi.weebly.com/uploads/1/3/4/5/134510621/pilomax.pdf
    • https://wuginimujewege.weebly.com/uploads/1/3/4/7/134714977/d824005d1514.pdf
    • https://xojovirasada.weebly.com/uploads/1/3/1/6/131637125/447066.pdf
    • https://nosekuge.weebly.com/uploads/1/3/2/7/132740467/24aaa068bc081.pdf
    • https://xupunidumurewes.weebly.com/uploads/1/3/1/4/131437359/suweregi-fexusodol.pdf
    • https://lemapola.weebly.com/uploads/1/3/1/4/131407815/8a086681c1576f0.pdf
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/674c86b4c.pdf
    • https://s3.amazonaws.com/zowejunef/calisthenics_workout.pdf
    • https://s3.amazonaws.com/jipowumat/mozilla_firefox_older_version.pdf
    • https://uploads.strikinglycdn.com/files/9faaea26-91aa-4054-843d-3059d39f21d0/48970055803.pdf
    • https://uploads.strikinglycdn.com/files/258e1c19-6cef-4bfd-96c1-0f79f0f6eec6/22326856913.pdf
    • https://uploads.strikinglycdn.com/files/885a4504-eaa1-4444-9964-2b952b85b7d2/40243145079.pdf
    • https://s3.amazonaws.com/pibabopuduj/pearson_education_us_history_workbook_answers.pdf
    • https://uploads.strikinglycdn.com/files/46edaa2a-8a88-4dc4-8c7c-f1683ecff9de/28981639067.pdf

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