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=e+v13+dna PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4374688/normal_5f9a4f6dd519d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365606/normal_5f93b92aa723b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376096/normal_5f92559a5b8df.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370071/normal_5f8946fab3ecb.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://pefukiketez.files.wordpress.com/2020/11/loliv.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f11f9adf-1bd2-4dca-9ec6-575e53a567fd/89722575249.pdfIn PDF document text
  • https://likuzow.files.wordpress.com/2020/11/40264502684.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f7604d98-54a2-46c7-bbfa-36ef30c25b3b/34797428320.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0b77a9e0-0352-4a4c-bba1-73e032927628/2311053041.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a914ee69-372c-4b5c-8171-ac370a8a07fb/acercate_a_la_quimica_larousse.pdfIn PDF document text
  • https://mudupetem.files.wordpress.com/2020/11/pemowal.pdfIn PDF document text
  • https://rawunimuz.files.wordpress.com/2020/11/adverbs_of_frequency_multiple_choice_test.pdfIn PDF document text
  • https://miwomonifi.files.wordpress.com/2020/11/echando_a_perder_se_emprende.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a95b966e-19ef-43f4-b57a-5c827f8e9c22/thats_no_moon.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b37b8c16-c4b5-480a-9a8c-2f2bcf6ada9d/destiny_2_a_weapon_of_hope.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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