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://ttraff.me/123?keyword=mole+worksheet+2 In PDF document text

  • https://gobebirerelimi.weebly.com/uploads/1/3/4/6/134651667/29ceba23.pdfIn PDF document text
  • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/gufogegapa.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4392452/normal_5f9f6fee6dbe4.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/0f23f6d8-8732-413c-91c3-03df6c78082c/75075270131.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bc687f78-5ea7-451b-8802-02028fcf797a/the_common_symptom_guide_6th.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/74f50da9-ce92-4fe5-8a59-e7f134ad8761/lipid_used_for_energy_storage.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fd16801b-44db-4f3a-8194-817898ad5354/rasudowagusutamorez.pdfIn PDF document text
  • https://s3.amazonaws.com/titugome/funny_spring_quotes_short.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5110485c-b851-412c-8576-eb2462ed252f/65466767685.pdfIn PDF document text
  • https://s3.amazonaws.com/leguvefu/woolf_a_room_of_one_s_own.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f9134536-a0ce-473f-97ec-e0dbb5e117d7/34841364059.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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