Malicious PDF — malware analysis report

Heuristics 6

• 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 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.
• 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
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://jacksth.ru/aws?utm_term=is+khan+academy+sat+math+good PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4368485/normal_5fd15520888fb.pdfIn PDF document text
  • https://cdn.sqhk.co/fiwujumejuf/hdidhbf/49203929558.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4448539/normal_600c65ae7d2a6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4409610/normal_5fdc1c7624dde.pdfIn PDF document text
  • https://cdn.sqhk.co/pifixijowoka/44zjbkP/motagekugepepodi.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380068/normal_604f0c217b67a.pdfIn PDF document text
  • https://cdn.sqhk.co/keragipiki/exvjgc9/46224859619.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://ba428ff1-d53d-4eb5-bdb2-cc960067f420.filesusr.com/ugd/7041e4_e42522a93ae6498a8e1d23b36d9da77a.pdf?index=trueIn PDF document text
  • https://feedbc21-cb93-402c-9ae2-3476589645d2.filesusr.com/ugd/f3ecbe_0440e87a047346249953cc53446c86af.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/6e2557db-f6a7-4259-81d4-6bbf063279e2/98742030671.pdfIn PDF document text
  • https://893c8be9-d140-4a04-8a3e-66bd54b472cd.filesusr.com/ugd/efd7ea_561aec125f254c4a8a74a7b82644f574.pdf?index=trueIn PDF document text
  • https://9d349da1-218b-4b59-9e37-2a90cab56d40.filesusr.com/ugd/de9003_ab737ea18a764348bc6551fb0caf4891.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/aeee6d33-c710-4907-a028-b1b32837f260/fisubumuzidevudotexez.pdfIn PDF document text
  • https://c245485c-e1a4-4c5a-9a2a-c465a95e53c8.filesusr.com/ugd/25f824_b414d6db31a9467d9bc00a33aebaa2f7.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/0b3b59bc-e1d4-4ee2-81a7-b60bd870ef75/wu_lun_chinese_grammar_structure.pdfIn PDF document text
  • https://be1d055c-b83b-422e-9e68-1bf13cef350c.filesusr.com/ugd/5b1e3c_5e95db16af884ddeae9abf8c32a458c3.pdf?index=trueIn PDF document text
  • https://e85625e8-91d5-48c2-95a4-67b7b95d5b39.filesusr.com/ugd/b97a97_ba162e66fc1646b08015669b32a811ef.pdf?index=trueIn PDF document text
  • https://9049409e-dcbb-43fe-b7cb-0f7a5d042cf1.filesusr.com/ugd/e59eee_7d203e6a59e6453f88b3d13b8b554987.pdf?index=trueIn PDF document text
  • https://592908bf-dd96-48cc-88d9-ffebbdd10d84.filesusr.com/ugd/f34823_69c17a1a5c294f968ca6d3b593b30c58.pdf?index=trueIn PDF document text
  • https://521a9f5b-5c7e-4f25-a9e4-5446fb1b1975.filesusr.com/ugd/c1a494_27f6f9fac31e4ab6b3ffae0b0e84fe02.pdf?index=trueIn PDF document text
  • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_d7eb9b04abf0449b83d2027637d7c883.pdf?index=trueIn PDF document text
  • https://e082cb0d-9c22-4a21-acb7-e2c6127a51d3.filesusr.com/ugd/ff0c06_1800d47f1ac24b1ebe9561f36351dbcf.pdf?index=trueIn PDF document text
  • https://7ae52be2-ba3c-41fb-8935-29281088223e.filesusr.com/ugd/affaa6_78eb0c7c5acc49919def0f7048f14a4e.pdf?index=trueIn PDF document text
  • https://4b4ea461-5266-411b-8735-d5290551f550.filesusr.com/ugd/7fedcf_01f4b3de84614710ac7067eeebd42613.pdf?index=trueIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://scripts.sil.org/OFLIn PDF document text

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