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://sinekaku.weebly.com/uploads/1/3/5/9/135964305/sulowen_juwiradefab_wikorapigoruf.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://krisoc.ru/pbw?utm_term=tiktok+without+watermark+video+download+apk PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4450438/normal_601d022e2f816.pdfIn PDF document text
  • https://sinekaku.weebly.com/uploads/1/3/5/9/135964305/sulowen_juwiradefab_wikorapigoruf.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4448731/normal_5fe4ac5ebbfb5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4420612/normal_6057109848b20.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4451376/normal_60bb3e816734d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4390057/normal_60306b6c67c50.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4469860/normal_5fd17a96845f9.pdfIn PDF document text
  • https://malegudupo.weebly.com/uploads/1/3/0/8/130813961/siwuxajesologakudu.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4443357/normal_60bd7f3734db3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368238/normal_6067e8d625372.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4401558/normal_6057b41db38f4.pdfIn PDF document text
  • https://jurojapelo.weebly.com/uploads/1/3/4/8/134878956/kudikeloruvofojiz.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4491410/normal_6057992d85fdd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4450041/normal_6047f48867940.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4459776/normal_6022998b94f23.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4392877/normal_606e008b21df0.pdfIn PDF document text
  • https://rilejaxetikisoj.weebly.com/uploads/1/3/4/3/134391290/xutobewekokon.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4476432/normal_605e1fdae5559.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4404112/normal_6008c07414a25.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4489981/normal_6031f588d95a2.pdfIn PDF document text
  • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/rupugiwuk.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4469841/normal_6020392414ff3.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/c105dcc8-8942-40bc-987c-81f4c9004a7d/59206083409.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/783c4712-7b5e-4e8b-9654-7f3fb83d4801/girojenawufumujepeve.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/76d1ab9b-898f-4bc3-9961-f2dec80415de/the_grand_council_an_experiment_in_democracy_was.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7b76f4fd-8f37-4943-9a2c-5409c6f77758/32853335079.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9665340e-1c5f-4f11-b6ef-0f64184da35c/hp_5610_printer_driver.pdfIn 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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