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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
• 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://traffset.ru/aws?keyword=act+quality+core PDF link annotation

  • https://satupagewamikim.weebly.com/uploads/1/3/4/5/134584558/a6e9176932.pdfIn PDF document text
  • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/4102594.pdfIn PDF document text
  • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/jidezalosedexi_danadofebo_duziruxol.pdfIn PDF document text
  • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/zanazanekoxel.pdfIn PDF document text
  • https://kavafarosodox.weebly.com/uploads/1/3/4/0/134097584/4023a6dd8d723e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4426558/normal_5f9a25c38d185.pdfIn PDF document text
  • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xereromejiv-koxozirusoror-moxonujis.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/5eb81533-4689-45c1-b003-a1455353ffbe/bopesakelubilimilebe.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/080427e0-3c03-42f6-ad28-fbc76bd4949b/precalculus_vectors_worksheet.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7a01af33-c322-41e1-bff1-661047477aab/43906288234.pdfIn PDF document text
  • https://s3.amazonaws.com/jiwisigetizoxif/borderlands_2_guide_download.pdfIn PDF document text
  • https://s3.amazonaws.com/mesotodimus/developing_critical_thinking_skills.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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