Malicious PDF — malware analysis report

Heuristics 5

• 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://trafftec.ru/123?keyword=what+is+depository+name PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4418557/normal_5fa52de13f91d.pdfIn PDF document text
  • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/7354112.pdfIn PDF document text
  • https://jerezuwiwufuken.weebly.com/uploads/1/3/4/3/134355676/badisof.pdfIn PDF document text
  • https://gobumireg.weebly.com/uploads/1/3/1/3/131383916/5984895.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378830/normal_5fa1b713e760f.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://fedorahosted.org/lohitIn PDF document text
  • http://www.opentle.orgIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://raxibob.files.wordpress.com/2020/11/reactivity_series_worksheet_ks4.pdfIn PDF document text
  • https://s3.amazonaws.com/safago/paper_mario_64_rom_emuparadise.pdfIn PDF document text
  • https://s3.amazonaws.com/sepawi/62661618432.pdfIn PDF document text
  • https://rezekine.files.wordpress.com/2020/11/tatojesanawav.pdfIn PDF document text
  • https://s3.amazonaws.com/betimugi/79504590049.pdfIn PDF document text
  • https://tirosagumeta.files.wordpress.com/2020/11/48729136818.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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
  • http://scripts.sil.org/OFLIn PDF document text
  • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

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