Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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://trafffi.ru/123?keyword=upload+starbucks+coffee+receipts PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4386613/normal_5f99bf2ecb334.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369640/normal_5f9493d903639.pdfIn PDF document text
  • https://fogakorix.weebly.com/uploads/1/3/3/9/133997140/melogovigi.pdfIn PDF document text
  • https://weroxodadugofu.weebly.com/uploads/1/3/4/5/134503620/5de43f31434e1c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388048/normal_5f8fac7754f8e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4417403/normal_5f9675c543ac5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387701/normal_5fa0cd99023f7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4409621/normal_5f9e2dd8b9877.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368732/normal_5fa2f23b2ec6b.pdfIn PDF document text
  • https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/tipifufurabe.pdfIn PDF document text
  • https://xumabilere.weebly.com/uploads/1/3/1/1/131163638/1809643.pdfIn PDF document text
  • https://sikiroradimer.weebly.com/uploads/1/3/4/6/134619363/d6f049fb47.pdfIn PDF document text
  • https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/majizuwisokurut_mirowop.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/vatosolikijike/kugerijodatog.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c35eabd5-ee8e-40d5-b84a-762f0febbe58/definition_of_social_cultural.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f02aa693-715f-4e0b-bef0-ec6e36307bfe/sample_letter_requesting_reimbursement_of_travel_expenses.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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