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://cctraff.ru/aws?keyword=aj+hoge+lessons+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4386609/normal_5f8ec20f46da2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369509/normal_5f8a76a6c624d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369307/normal_5f93ec7f052a0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370278/normal_5f88b3bcc7865.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370054/normal_5f925f0cbf7c6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367941/normal_5f8af21ae3db1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4405181/normal_5f924a7cbb45d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370270/normal_5f8941bbed052.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369168/normal_5f9204332585e.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/henghuili-files/arunachal_pradesh_road_map.pdfIn PDF document text
  • https://s3.amazonaws.com/putelekireza/identifying_emotions_activities_for_adults.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/11f02f67-84b1-4769-9d52-c50018b57704/lerilifakituxa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f04be332-3681-416d-ae9e-1d5f1d37b476/biwotusenaxiradotujifoj.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/23865b45-9633-4584-8da1-ea1b2ff18fb3/96586386991.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/9929/4363/files/waluzowipagumajadu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/8950/9017/files/beloved_toni_morrison.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/1457/3213/files/prohibition_the_noble_experiment_worksheet_answers.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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