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.
• MFA / one-time-code harvesting lure high SE_MFA_LURE
  Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
• 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://xezojetit.ru/strik?utm_term=sensaphone+400+programming PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4497081/normal_6050023f49ef7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370076/normal_602d37fe29dd1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368229/normal_601e8f21191bd.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4393626/normal_6000df1530a3b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393791/normal_60290d91eacf5.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/falevi/calendar_template_for_powerpoint_2018.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1635ca09-8faf-4b33-b273-3386ae16684c/amc_10_2015_a.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1ccbfb21-521d-48b9-8a36-cd180bfff011/fupone.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4f5ae08f-217d-4fdf-ad86-416f93f4492b/samsung_tablet_wont_turn_on_wifi.pdfIn PDF document text
  • https://s3.amazonaws.com/dowesitobuga/belgium_postcode_format.pdfIn PDF document text
  • https://s3.amazonaws.com/muvarelo/a._n._jell_songs_free.pdfIn PDF document text
  • https://041aa876-b65b-432c-96c0-58c8b295a4e4.filesusr.com/ugd/90d19e_31c5fe956f57457aa91fddb8bbe4007d.pdf?index=trueIn PDF document text
  • https://s3.amazonaws.com/vapite/christmas_wedding_planner_2017.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f9ea6621-23f5-476c-8e23-16799fef55b6/how_to_adjust_temperature_on_frigidaire_refrigerator.pdfIn PDF document text
  • https://882e4f53-a7e1-4d4a-89e8-a6e6d9f9b805.filesusr.com/ugd/9a13d2_c98bcb435e4c48b7a3c42efd7f99a6d0.pdf?index=trueIn PDF document text
  • https://93641f3c-03d3-4c8c-b6db-0fd9bfabe798.filesusr.com/ugd/384ca7_9917b8b7ab43474989f1ed71e5a66381.pdf?index=trueIn PDF document text
  • https://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_65413c2b2e3548e3a9033855494071c6.pdf?index=trueIn PDF document text
  • https://d3919fa5-c020-464c-a773-72e456e10464.filesusr.com/ugd/29136f_6e65c7799573440ebf03ee158b95e360.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/5b100562-fd0e-4ffd-a7e2-ae487b2e56d6/46189246682.pdfIn PDF document text
  • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_0c540229b5ae416da5d76e2411f55746.pdf?index=trueIn PDF document text
  • https://c4cd0dbc-23d7-4f11-b65f-2561cec8abe5.filesusr.com/ugd/516793_be39e251c0a5416ea3d5c21049b76642.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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