Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92e9ef2588e3c89…

MALICIOUS

PDF

84.6 KB Created: 2021-03-25 15:28:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 908227a4d1526cf110716a8189f72f6e SHA-1: 5f94a35a6b437456320460318abc349d95a00887 SHA-256: c92e9ef2588e3c89f22167df4700ef5c34ae67e81051bc62519707f7aa3d8ca3
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs, many of which point to disposable hosting or unknown reputation domains, suggesting a link farm designed to redirect users to malicious content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically flags this behavior. While no scripts were extracted, the overall structure and URL distribution strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9328

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/award?keyword=campesinos+de+los+andes+y+otros+escritos+antol%25C3%25B3gicos+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448330/normal_6052765db4190.pdfIn PDF document text
    • http://tideboweped.medianewsonline.com/57795495935.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/dghtXij/super_phantom_cat_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476446/normal_5fceef3298e2a.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/LdhhgjM/73220388464.pdfIn PDF document text
    • http://dumubemajizukov.medianewsonline.com/ranugozawipu.pdfIn PDF document text
    • http://xunetokawetik.sportsontheweb.net/wilomexulabesabebujoxe.pdfIn PDF document text
    • http://zelopaqq.xyz/animal_evolution_chart_ncerttbu1c.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/ejihaFr/30006693957.pdfIn PDF document text
    • http://dreabling.online/multiplying_fractions_word_problem_worksheet5uqcw.pdfIn PDF document text
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    • http://parawabasufubep.iblogger.org/baketexikatobusujudono.pdfIn PDF document text
    • https://cdn.sqhk.co/poraloguve/ilgNXih/tebasujizo.pdfIn PDF document text
    • http://gafuvufafokujop.sportsontheweb.net/sawenematerolegava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1869ccba-cd98-459c-9e49-6456664fdb7f/22358578615.pdfIn PDF document text
    • http://povuputuk.epizy.com/relusomasuxukun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70e26ec9-96fe-44ec-a99e-0418fd4e6320/9669223216.pdfIn PDF document text
    • http://tuguwogut.rf.gd/vasekobagisef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee263aa9-e254-48e3-80a4-52a36b22c68a/how_much_does_an_ansul_fire_suppression_system_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d3c9da8-d4f7-4e5b-9f45-4ee0f0a768c2/61946027734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/942b7944-cca8-4fb2-a589-ef039251e759/setodedenugepumedeb.pdfIn PDF document text