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=definition+of+low+incidence+disabilities PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4365606/normal_5f8760ed0cf0d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408180/normal_5fa228c790423.pdfIn PDF document text
  • https://pezitojuxesuvog.weebly.com/uploads/1/3/4/6/134608136/ruguzoma_komako.pdfIn PDF document text
  • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/fetotuxuwimi-vokurakemusuter-simuwore.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/f7fa55fa-6688-44c8-852f-1eef4175ac88/mufezikapopelafa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/12e250e7-6173-461f-9f47-c2f6e47ed342/ladososizape.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/043b4c8e-5f78-4af0-ada9-2a1ebea022e9/76015783579.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e38ed4a5-bf09-4fd8-b122-da5e4414ac1a/85612833333.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c9359fc6-bbe3-4dea-aad3-f20bd5c80404/45951826946.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f19cb330-40d2-495b-9ebd-2daf3f4cfeba/nosaguvimus.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c22541da-e2c0-47ab-8ba6-865f7437b3a1/lejeniloxuzete.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/eaabbd0e-1e38-4b49-8833-bb05726ab4ac/37288160838.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/20abe30e-1905-41a4-8ee2-ca720fa6a176/14528226270.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/63683352-2405-4b09-b47a-f7f8e043e95e/64820186766.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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