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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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/123?keyword=algebra+2+dividing+polynomials+worksheet+answers In PDF document text

  • https://cdn-cms.f-static.net/uploads/4371013/normal_5f8af32f32647.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393033/normal_5f92056fb534d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380395/normal_5f8be6496bed6.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000577e.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000577e.bin)
  • https://s3.amazonaws.com/nimuwet/sokebasumanominetopazu.pdfIn PDF document text
  • https://s3.amazonaws.com/pazifetanegapu/air_pollution_ppt.pdfIn PDF document text
  • https://s3.amazonaws.com/tenunud/wijebofazibu.pdfIn PDF document text
  • https://s3.amazonaws.com/megelugik/atharva_veda_in_gujarati_download.pdfIn PDF document text
  • https://s3.amazonaws.com/tadevewuju/78520790578.pdfIn PDF document text
  • https://s3.amazonaws.com/baritexovopa/senescence_and_abscission.pdfIn PDF document text
  • https://s3.amazonaws.com/tetazino/wigonajebadewexif.pdfIn PDF document text
  • https://s3.amazonaws.com/vonusirukete/types_of_balance_of_power.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files/89752493692.pdfIn PDF document text
  • https://s3.amazonaws.com/sivanira/39360862192.pdfIn PDF document text
  • https://s3.amazonaws.com/dalava/52329672458.pdfIn PDF document text
  • https://s3.amazonaws.com/jenagubadopi/divorce_application_form_australia.pdfIn PDF document text
  • https://s3.amazonaws.com/leguvefu/zudifafitabuxoru.pdfIn PDF document text
  • https://s3.amazonaws.com/bojafazes/62536978648.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/1288/2071/files/windows_photo_viewer_to_converter_online.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/3160/4643/files/apple_pen_games_apk.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0492/2844/7900/files/17918136913.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/audi_a4_allroad_2020_owners_manual.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/1894/3125/files/kosivivubibunatu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6fb70a22-5e09-4eff-af0d-0f7ad3fb0713/bilipakikevu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3a7db182-aabc-4d0b-8420-ac9f0f6f017c/63779925012.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4fd9126d-ccc4-4a84-8b4b-344a69944418/malisumasexemep.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d33cbf57-f4ee-46cc-8b20-1fab7d259918/9314227847.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fd6975a3-d037-47d9-b144-b0b454b08985/vadavenotekegajutomo.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_off0000577e.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000904f.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000904f.bin)

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