Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
  Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://veworokog.weebly.com/uploads/1/3/1/6/131606039/wozefeke.pdf.
• 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/123?utm_term=explanatory+vs+response+variable+worksheet PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4485308/normal_600e5376702d8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376369/normal_600b3b72a8b61.pdfIn PDF document text
  • https://cdn.sqhk.co/sesekopusoj/jhg4iap/wububujilelin.pdfIn PDF document text
  • https://cdn.sqhk.co/ganidabizi/92Nfijb/zivifam.pdfIn PDF document text
  • https://veworokog.weebly.com/uploads/1/3/1/6/131606039/wozefeke.pdfIn PDF document text
  • https://figedojopijobe.weebly.com/uploads/1/3/4/7/134769561/8338117.pdfIn PDF document text
  • https://cdn.sqhk.co/xubewarow/Vgcggg1/while_true_learn_solutions.pdfIn PDF document text
  • https://litalegikuga.weebly.com/uploads/1/3/4/5/134587653/6684087.pdfIn PDF document text
  • https://reravojune.weebly.com/uploads/1/3/1/4/131406269/7daadb0490.pdfIn PDF document text
  • https://cdn.sqhk.co/fejumoraw/Jjjicjd/algae_biofuel.pdfIn PDF document text
  • https://cdn.sqhk.co/vimewiki/bkidd6x/best_time_clock_calculator_app.pdfIn PDF document text
  • https://cdn.sqhk.co/romemanir/jhiigc4/konusarizamoxeladatorij.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4465007/normal_5fce852634401.pdfIn PDF document text
  • https://cdn.sqhk.co/kotoweraga/gcBhfji/laroxodojaj.pdfIn PDF document text
  • https://cdn.sqhk.co/dewufidabo/2jjhdzT/47819458343.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://fa5d8e44-005d-4c05-925d-ba60cb7f5023.filesusr.com/ugd/121e37_bb2210abfad3471c9ac2bb1523647d5c.pdf?index=trueIn PDF document text
  • https://fb7bf4c5-056f-4058-a7d1-073478569b53.filesusr.com/ugd/d90490_e5af9b984f3e4a65a373897320676462.pdf?index=trueIn PDF document text
  • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_9533c564bcc043f2842846b6c51a3a51.pdf?index=trueIn PDF document text
  • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_5cf510060e5247c59f03c7e035036db8.pdf?index=trueIn PDF document text
  • https://3e021c9a-284a-4c54-9ba1-f6d43d4d2ba5.filesusr.com/ugd/a619af_18972951a30d41e6a5dbe3a54379f5ce.pdf?index=trueIn PDF document text
  • https://0502d5d0-a0f5-47b8-bc1c-644c46e4e431.filesusr.com/ugd/6cabbb_b034a3afe5b2418393ff690a6ea2a1a1.pdf?index=trueIn PDF document text
  • https://3dcfbd4a-ef33-49dc-a04a-0aaf5307c30d.filesusr.com/ugd/b47706_e4d6f8ce408940cbac4bfeca70e702fc.pdf?index=trueIn PDF document text
  • https://6a8c3f3f-5248-4e80-80e0-4bf2c04f72bc.filesusr.com/ugd/8b2c09_3147d93cd8014d91aff627bc019d62a1.pdf?index=trueIn PDF document text
  • https://8d928d4c-4e32-4dc6-8093-d383c90b3cca.filesusr.com/ugd/b5d49c_cd041828aca1470f9afa7fd47e359c0a.pdf?index=trueIn PDF document text
  • https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_5d6b271aeacb40b3ac57845f0ea03b38.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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