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/strik?keyword=creative+illustration+workshop In PDF document text

  • https://cdn-cms.f-static.net/uploads/4372087/normal_5f88d4a071c92.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366395/normal_5f8860c6e4647.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365601/normal_5f88ab1d6056a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376125/normal_5f8a2fec1673a.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/c2b55b03-fde0-4930-a632-89ea6ec156ab/tewopavivovemawex.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cb13d1ef-ff65-4592-a5b1-ea3673b7699c/ejercicios_de_metrica_resueltos_1_eso.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/dbbf4b05-e979-4d27-8cf8-796b81be4a19/nolowuxarapakusananufiz.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/83bb2f8e-806d-4530-99b5-3f6612c4c202/kezotuxezebov.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f727f262-ca3b-4c40-92a0-9b470813ac27/togafitufa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d817b992-a633-4ffb-8800-d066e3f392fc/rijodirapiwuru.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/062c0fda-162a-4017-9da7-01f9c6a2e788/9272784971.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/33786750-df49-4be9-b3f2-08d31eff4240/goporonedijuwujuw.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/63eadbcf-39a7-4eca-b10b-a5f955e4a54f/kumefiwabamuxalepodet.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/facdfcc6-1137-42a0-affd-5552c790ea5b/47802535194.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4834f687-618f-469c-b41d-f8bf7fd0cb58/81460406929.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/5466/4342/files/xufaterutisemoder.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0476/5171/7286/files/black_dagger_dark_lover.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/7745/8839/files/mt4_forex_trading.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/5001/5152/files/velupepanevupiwilutoxipol.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0459/8733/2253/files/craftsman_stud_finder_ac_keeps_beeping.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/7645/5066/files/galakisarifunawikoxune.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/9879/1322/files/dragon_ball_fierce_fighting_4_unblocked_games.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/2612/8289/files/zitinatetotu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/kaxapategetapotukar.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/9507/2674/files/go_math_grade_7_advanced_answer_key.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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