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://traffset.ru/123?keyword=text+message+facebook+password+reset+code PDF link annotation

  • https://sulewana.weebly.com/uploads/1/3/4/6/134605909/tituz.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380214/normal_5f93cd2423bf2.pdfIn PDF document text
  • https://setekonireza.weebly.com/uploads/1/3/4/1/134131298/nazurufime.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/3f23581f-53b4-4004-8235-e05fb397c3b0/41803909754.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bea2f6fa-1086-493a-967d-bd1159a18b90/bosch_error_e24.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cc815262-a2f1-4745-9f22-e1d9eba7a158/86435234859.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/175a2f96-19d9-49cb-9477-b1abc140ec96/lenevigudanomapelegugiki.pdfIn PDF document text
  • https://s3.amazonaws.com/wumodukubaru/7610948607.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1a28dac8-e98c-46d8-b227-f459fcec2667/wgu_c200_task_1_essay.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c5be8dcf-8366-4a14-916e-63c5166aa4da/oppo_a33f_flash_file.pdfIn PDF document text
  • https://s3.amazonaws.com/purufiz/paxawomekinijopif.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/21b9fa5b-23d0-4336-8980-ff74c0fb2fd4/16433487215.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7ca5bbe4-d36c-4ddc-bde5-c6cb544fd194/fozumiduva.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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