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=phase+change+diagram+pdf PDF link annotation

  • https://tesokumerapaj.weebly.com/uploads/1/3/4/5/134522001/nosol_govebejijom_bekujuwemir.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/a6bb1db7-5add-4f92-8425-7c70911e453f/96553120184.pdfIn PDF document text
  • https://s3.amazonaws.com/bupaxomu/26759327008.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/52d10f3c-fd05-41f2-a645-fd2cbc542947/wimij.pdfIn PDF document text
  • https://s3.amazonaws.com/sikuva/51729010240.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6ccca76b-807a-45aa-975d-97be7d4c946f/vegas_world_level_up_cheats.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0d030632-1bbb-455f-8e3f-e72475410507/soxizira.pdfIn PDF document text
  • https://s3.amazonaws.com/tulosa/psychology_test_4_answers.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9d063e19-ddf7-4966-88d0-27371ba6f308/5e_lucky_death_saving_throw.pdfIn PDF document text
  • https://saridejawe.files.wordpress.com/2020/11/46503178667.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bbc3cbf3-b8a0-4355-ab12-6106476aa624/lord_of_the_flies_chapter_2_review_questions_and_answers.pdfIn PDF document text
  • https://s3.amazonaws.com/vajefam/happy_tree_friends_petunia_x_handy.pdfIn PDF document text
  • https://s3.amazonaws.com/megodipewukitoj/28819383561.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5c2b9eb8-f18e-4b21-b802-032fd377ee8e/rilikosinusap.pdfIn PDF document text
  • https://xigikomi.files.wordpress.com/2020/11/ejercicios_de_movimiento_rectilineo_uniformemente_acelerado_con_graficas.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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