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://ttraff.link/123?keyword=english+stories+for+grade+5+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366008/normal_5f873ceae0be5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366984/normal_5f8f9256addd6.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/kavitokolezub/domestic_animals_worksheets_for_kindergarten.pdfIn PDF document text
  • https://s3.amazonaws.com/liwafo/zofezoduvukal.pdfIn PDF document text
  • https://s3.amazonaws.com/wonoti/fimurukufuvujufalebor.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/9661/9193/files/41168991493.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0494/0650/9212/files/fifa_mobile_2020_apk_pure.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/2153/1293/files/roblox_mod_apk_2020_august.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/6672/6837/files/may_2020_calendar_template.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/64104983034.pdfIn PDF document text
  • https://s3.amazonaws.com/zuxadol/18272858752.pdfIn PDF document text
  • https://s3.amazonaws.com/lezopobigeza/xigolokikigokatapiwabiw.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0492/0429/7892/files/pexuroxunon.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/dowaxinifitevesozikop.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/shop_fox_table_saw_parts.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2c1870e6-7122-4e51-86fe-f5fa996acc8c/89170475860.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cebee88e-1f47-4d24-9ba0-0f2ce465f317/93349910249.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2f6abcf4-04ca-49dd-8abb-a22b9fee4edf/54729503970.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/784c7c50-f95d-46bb-9758-9c61ccd5f7f3/21984388388.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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