Malicious PDF — malware analysis report

Heuristics 5

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• 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://traffine.ru/123?keyword=books+about+the+white+mountains In PDF document text

  • https://cdn-cms.f-static.net/uploads/4392209/normal_5f95fa8d6381a.pdfIn PDF document text
  • https://bakuwosir.weebly.com/uploads/1/3/0/8/130874569/63f25828.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379034/normal_5f975e1a7cb89.pdfIn PDF document text
  • https://tenasusuboziwid.weebly.com/uploads/1/3/4/3/134349012/lagevaxobojaj_gugurikorome_zufizof_mikotejo.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://uploads.strikinglycdn.com/files/fbcca804-c2fb-4a78-961e-a381e3f392b4/48498783140.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b252bbd1-e32c-4b97-b357-ae7fa1f9ccab/haydn_emperor_s_hymn_piano_sheet_music.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/08b42d9c-8e9d-445c-98de-fe2f6051d178/personal_information_release_form.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/dd1b96f1-9b9c-4e45-9717-1fb890d6fad3/que_es_tipologia.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8273056d-dc4d-40c8-963d-89279915dbe8/befafodokeno.pdfIn PDF document text
  • https://nikukulorula.files.wordpress.com/2020/11/zagiwajafidasoviwefof.pdfIn PDF document text
  • https://salexovig.files.wordpress.com/2020/11/o_livro_do_conhecimento_as_chaves_de.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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