Malicious PDF — malware analysis report

Static analysis result for SHA-256 fead8334cc256c46…

MALICIOUS

PDF

61.2 KB Created: 2021-02-23 12:45:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3499ffa297778284560b27bf82d51e1 SHA-1: a366d1dae4a73204c417c4b420dddae7eff9bc92 SHA-256: fead8334cc256c466d72f87bf243f291fdfcac567349f1706f6d11cf80190e4d
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, many of which point to disposable domains, suggesting a link farm or phishing attempt. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the presence of external URIs and the link farm heuristic strongly indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7109

Heuristics 3

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/strik?utm_term=how+does+density+affect+gravity
    • https://static.s123-cdn-static.com/uploads/4477379/normal_5ff8d587bb6aa.pdf
    • https://cdn.sqhk.co/guzikiku/NUjdp56/71910599102.pdf
    • http://soldonlakewood.com/domaxegewezibatulizawsjbx7.pdf
    • https://static.s123-cdn-static.com/uploads/4423431/normal_5fcd3470949d5.pdf
    • http://kunonelujaver.22web.org/appendix_4e_template.pdf
    • https://cdn.sqhk.co/wareberefiz/geEm3hc/pac_man_championship_edition_2_plus_review.pdf
    • https://cdn.sqhk.co/kobewudojuvo/gggPpih/9545806953.pdf
    • http://poradoit2.site/dxh_900_hematology_analyzeryjy1y.pdf
    • http://romeita.space/myles_munroe_books_understanding_your_potentialguhi0.pdf
    • https://static.s123-cdn-static.com/uploads/4470532/normal_5fced8a9e6a61.pdf
    • https://cdn.sqhk.co/divojimo/gjiMhdj/impulse_response_guitar.pdf
    • http://robolab.one/anomalias_geneticas_humanas_arbol_genealogico4pj4a.pdf
    • http://zufefusu.iblogger.org/32181151518.pdf
    • http://babijegogaluz.epizy.com/berlitz_english_level_5_ebook.pdf
    • http://nanesipub.rf.gd/creditors_reconciliation_template_in_excel.pdf
    • http://pazalijof.epizy.com/philippine_entertainment_trivia_questions_and_answers.pdf

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