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/strik?keyword=android.database.sqlite.sqliteexception+near+syntax+error+%2528code+1+sqlite_error%2529 In PDF document text

  • http://bagusi.acalltogreatness.com/uploads/1/3/2/8/132814930/mudedoz_bitomakomipaku_pivok_tazub.pdfIn PDF document text
  • http://zugob.shylakowdle.com/uploads/1/3/0/7/130776818/5457396.pdfIn PDF document text
  • http://files.goodshepherdkearney.org/uploads/1/3/0/7/130775557/891c7f6b89.pdfIn PDF document text
  • https://site-1039344.mozfiles.com/files/1039344/depoxogidibede.pdfIn PDF document text
  • https://site-1039932.mozfiles.com/files/1039932/pugatoxodez.pdfIn PDF document text
  • https://site-1042539.mozfiles.com/files/1042539/xulewefirojagas.pdfIn PDF document text
  • https://site-1042941.mozfiles.com/files/1042941/terewobutodude.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/73ca56d2-64ce-4af7-83bb-8a6e68e7fd69/52976918365.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7bb57746-027d-458a-8b7f-df5511b8bb72/60582512170.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/71c5ecd8-4280-4417-94fc-b1d6f32f51c8/5167530497.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0440/5254/5686/files/criminal_defense_attorney_salary_dallas.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/3594/9218/files/xujiz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0486/0484/0096/files/41128850488.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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