Malicious PDF — malware analysis report

Heuristics 5

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• 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://cctraff.ru/aws?keyword=math+literacy+test+pdf In PDF document text

  • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/6544629.pdfIn PDF document text
  • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/d5428ef2.pdfIn PDF document text
  • https://dupizonax.weebly.com/uploads/1/3/1/3/131380343/winizino.pdfIn PDF document text
  • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3355978.pdfIn PDF document text
  • https://ligexomapaku.weebly.com/uploads/1/3/4/3/134321337/1181756.pdfIn PDF document text
  • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/b8830112.pdfIn PDF document text
  • https://velulaganivuvoj.weebly.com/uploads/1/3/4/4/134438708/zudik.pdfIn PDF document text
  • https://morozosewiveloz.weebly.com/uploads/1/3/4/3/134387595/puzofiwaxowik.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384154/normal_5f8f032d84962.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4390996/normal_5f9637cde577b.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005971.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005971.bin)
  • https://uploads.strikinglycdn.com/files/57da643e-59c5-4832-8dd9-7dee0c797465/zasuxasalinirebitozewam.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5e1cf7a8-3ed7-4684-9811-8db197e069b3/luwoziwugovekenupame.pdfIn PDF document text
  • https://s3.amazonaws.com/fadedosi/alveolektomi_adalah.pdfIn PDF document text
  • https://s3.amazonaws.com/golepe/perkembangan_kereta_api_di_indonesia.pdfIn PDF document text
  • https://s3.amazonaws.com/lijulijowivaze/fabomomulitufix.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0476/8052/0358/files/91777947315.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/4548/5725/files/bible_quiz_questions_with_answers.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/3179/7149/files/36712092294.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0504/3568/6560/files/saxon_math_2_teacher_edition.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 extracted file (font_00_sfnt_off00005971.bin)

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