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://gettraff.ru/strik?keyword=calorimetria+exercicios+resolvidos+vestibular In PDF document text

  • https://site-1036886.mozfiles.com/files/1036886/46942732201.pdfIn PDF document text
  • https://site-1043471.mozfiles.com/files/1043471/25770442535.pdfIn PDF document text
  • https://site-1042011.mozfiles.com/files/1042011/27195798189.pdfIn PDF document text
  • https://site-1041084.mozfiles.com/files/1041084/90350328529.pdfIn PDF document text
  • https://site-1041615.mozfiles.com/files/1041615/sozanasojagize.pdfIn PDF document text
  • http://files.cabincreekanimalhospital.com/uploads/1/3/1/3/131382395/tomapejixaxixo.pdfIn PDF document text
  • http://jewaraso.d-aleksandar.com/uploads/1/3/1/8/131856072/7fe695da2346.pdfIn PDF document text
  • http://files.expresschurchofy.com/uploads/1/3/1/3/131383297/wivetezo.pdfIn PDF document text
  • http://files.treasureu.net/uploads/1/3/1/0/131069738/kuvamukikakom.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off0000f5a6.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off0000f5a6.bin)
  • https://cdn.shopify.com/s/files/1/0485/1551/4523/files/78462950577.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/7345/7313/files/bach_festival_2020_eugene.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0476/9418/4607/files/bosch_battery_warranty_no_receipt.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/9853/8151/files/pathfinder_titan_mauler_errata.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/1208/8231/files/to_the_sky_kingdom_tang_qi_free_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/mr_krabs_net_worth_video.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/3957/5192/files/mario_party_island_tour_all_minigames.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/8047/2983/files/death_nut_challenge.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_01_sfnt_off0000f5a6.bin)

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