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.me/123?keyword=download+game+fidget+spinner+io+mod+apk In PDF document text

  • https://cdn-cms.f-static.net/uploads/4408712/normal_5f938be31c375.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383577/normal_5f94f5957ed6d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366348/normal_5f8fef62e1da6.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000068ea.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000068ea.bin)
  • https://uploads.strikinglycdn.com/files/38e6de89-cc4e-4091-b900-37659acc29bd/en_quepoca_sucedio_les_criptas_de.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cd372d99-8667-40c8-b4dc-df9f6fc03fcc/91422558932.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c7598695-3daa-430f-a92a-bb5aac22e117/lutun.pdfIn PDF document text
  • https://s3.amazonaws.com/fasanag/adjective_order_exercise.pdfIn PDF document text
  • https://s3.amazonaws.com/wonoti/63263501078.pdfIn PDF document text
  • https://s3.amazonaws.com/wilugugo/acing_the_new_sat_math.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/3884/6359/files/predictive_text_android_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/4674/3449/files/45189372789.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/4646/1855/files/federalism_webquest_worksheet_answers.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/7597/0236/files/patent_ductus_arteriosus_journal.pdfIn PDF document text
  • https://s3.amazonaws.com/kavitokolezub/naforufovixawufizawike.pdfIn PDF document text
  • https://s3.amazonaws.com/zuxadol/87908603570.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_off000068ea.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00009ef7.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00009ef7.bin)

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