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=certificate+template+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4371244/normal_5f959a3d37895.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366032/normal_5f87816f3759c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4404753/normal_5f91f59f22dbe.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366032/normal_5f871a8ff3a78.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370780/normal_5f9642339b365.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380522/normal_5f8c3ab6d29a3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4391000/normal_5f8e1b0bc27f6.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005baf.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005baf.bin)
  • https://uploads.strikinglycdn.com/files/d155447a-05db-4535-996a-97ca091bf512/mesuf.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/684e4e5d-f707-4d2b-8a3e-952363eeeabc/96997856185.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/26bc925a-4f6d-4697-8a2a-4a71d7b8d320/97556599156.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6e2b641c-9c79-4ba4-96cb-8090e4c1ce91/90269075612.pdfIn PDF document text
  • https://s3.amazonaws.com/jutenojamega/adding_and_subtracting_decimals_notes.pdfIn PDF document text
  • https://s3.amazonaws.com/kavitokolezub/pdf_to_word_converter_free_download_full_version_online.pdfIn PDF document text
  • https://s3.amazonaws.com/xuzed/29157515531.pdfIn PDF document text
  • https://s3.amazonaws.com/wiwuxot/developmental_psychology_childhood_adolescence.pdfIn PDF document text
  • https://s3.amazonaws.com/temujonuwu/finance_interview_questions_and_answers_for_mba_freshers.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/8494/6850/files/43355340304.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/autel_maxidas_ds708_key_programming.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/5458/0391/files/pokemon_go_spoofer_no_human_verification.pdfIn PDF document text
  • https://s3.amazonaws.com/fekazudabo/amazed_chords.pdfIn PDF document text
  • https://s3.amazonaws.com/bulozor/92476443579.pdfIn PDF document text
  • https://s3.amazonaws.com/mefadedosuw/7599269504.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_off00005baf.bin)

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