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/aws?keyword=oxford+dictionary+vocabulary+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4367642/normal_5f89aafa27d9a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4389820/normal_5f8f5bfaa39ab.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4404514/normal_5f95a1a3bcc39.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369152/normal_5f960ebf9a38c.pdfIn PDF document text
  • https://warobakun.weebly.com/uploads/1/3/4/4/134486798/detijavado-janeloge-bowozovix-niwikex.pdfIn PDF document text
  • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/1149320.pdfIn PDF document text
  • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/vetobidewova.pdfIn PDF document text
  • https://dodivimibo.weebly.com/uploads/1/3/4/3/134305777/3bd447.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379723/normal_5f94847a67ef3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4420237/normal_5f9613a9a0b61.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365551/normal_5f88ad10ce103.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000740c.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000740c.bin)
  • https://cdn.shopify.com/s/files/1/0482/2273/2445/files/globalisation_and_international_business.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/2722/5506/files/genesis_south_lawrence_class_schedule.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/8717/9160/files/lego_ninjago_coles_blaster_bike_instructions.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/6245/5200/files/21683883250.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/8831/2488/files/sonotof.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/70e04a66-e165-4559-8252-ceaebf5923dd/33627332373.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0321bfe5-ed41-4a87-844a-d4964993cf02/vanenapenuxibugipusibum.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1d7b2ca1-90c3-4bfc-a96d-b920a88457dc/free_duffle_bag_patterns_to_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5ab99d9d-cea4-4eec-9f56-2d91e663f569/rokekanagaluvemomubexiwo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8db82ef3-18e9-4559-a031-06185edc29c2/printable_multiplication_tables_from.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/02b8d1e7-fbc9-4a39-824b-4d654ce3ce3b/5887941032.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4f945e9b-aff8-4d51-9d75-dd81cba1d3c3/58834023348.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/105f0b5e-89c8-4a02-8858-918c97fb6177/bewovizixisimewo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/42afb0f1-0eee-4ab1-8057-bd9ec2b21b6a/luviniwif.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_off0000740c.bin)

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