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.link/pify?keyword=an+introduction+to+mathematical+cryptography+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4383573/normal_5f8cb7a4399e9.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/0388/6755/files/foronopizav.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0505/1387/1018/files/95226049730.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/9964/6878/files/44622242016.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0503/0389/3686/files/download_mp3_player_apk.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/4808/1834/files/84165949299.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/2669/2265/files/renew_lotion_target.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/2940/5089/files/vudog.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0480/9280/7322/files/41629240901.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/7217/4233/files/4liker_apk_for_ios.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/6873/3634/files/xebulunelok.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e6279a58-e245-4c1d-824e-ef0b763c5fa1/23647876397.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/91848236255.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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