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/123?keyword=tails+nightmare+32 PDF link annotation

  • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/6a9a9daeda.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413696/normal_5f9d57050aa87.pdfIn PDF document text
  • https://majubatu.weebly.com/uploads/1/3/4/2/134265851/fcc7986.pdfIn PDF document text
  • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/7756668.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4421468/normal_5f9a02bda9af7.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/68676e66-0cad-47e7-bb76-59e5bd88ba52/boxebojamisa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/edf47d1b-8e09-4ba5-ada6-cdb253dfee4b/pizz_party_pickup.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1d5e9214-1681-494b-a06a-f1ad4b27aadc/lenovo_t420_manual_free_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5fbf8b15-7316-44df-bfba-a3feba438b4f/12639892330.pdfIn PDF document text
  • https://s3.amazonaws.com/baposivarabuj/budget_mtg_arena_decks_2019.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/45744bf6-9372-4d31-ba4c-5ebccd480771/parikawibudupugo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cc3f5351-7128-4a07-95bd-3a83e89cde01/gisabojujulifita.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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