Malicious PDF — malware analysis report

Heuristics 5

• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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://trafffi.ru/aws?keyword=super+mario+bros+world+apk PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4366055/normal_5fa20c4a9c5b9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377656/normal_5f8a2c942b83d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367650/normal_5f91c5574d7ee.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413236/normal_5f949b8f2539d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376611/normal_5f8a4f8dec1c7.pdfIn PDF document text
  • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/76c30d49.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/09fe6d4d-db97-4580-ab8e-78543bcf0480/74911126468.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/88c3e493-ac5d-4d77-8aaf-8c14f39cf460/roxedewapanarik.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fe354814-53f9-4377-9922-92142968a552/pakefivok.pdfIn PDF document text
  • https://s3.amazonaws.com/vukumesoj/nonulawebegugemofatunuri.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/glanzer_and_cunitz_aim.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6aeffcb8-20c7-48f3-bcac-0882de1d2bb6/48869640977.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f6391f5c-1b4d-4a41-bb10-ad256b53c20f/31915080018.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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