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://traffset.ru/123?keyword=download+simply+piano+app+for+pc PDF link annotation

  • https://navubenawegef.weebly.com/uploads/1/3/4/3/134320789/zomojaf_sofim_sanageb_vumurozagulo.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374013/normal_5f91c616e76f7.pdfIn PDF document text
  • https://suzaruluzi.weebly.com/uploads/1/3/4/4/134455671/xekopojawinofo-lawawu-wuwozalevope-juker.pdfIn PDF document text
  • https://finivoxub.weebly.com/uploads/1/3/4/3/134387593/13b0df262259.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365545/normal_5f9a4625209db.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366660/normal_5f90ab37176e3.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/e1ad4d60-c03c-4f96-a519-4abda2650af7/36910920426.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/55443b6f-1d57-467f-b9c2-e47ce839f943/lufokijunoserimu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e0eff051-f6ce-4de1-aa79-8858e4926f81/star_wars_before_the_awakening_free.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a6823b45-4858-47f6-8fb5-9518bef5ab40/bwwm_romance_free_kindle_books_unwanted_baby.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/80aa8661-84fc-4508-a41d-614afa069366/vipokeredoropofojunitun.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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