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/aws?keyword=ion+color+brilliance+hot+red+semi+permanent PDF link annotation

  • https://zefubolinela.weebly.com/uploads/1/3/4/3/134318842/wurexotiniwes.pdfIn PDF document text
  • https://winugemu.weebly.com/uploads/1/3/1/0/131070294/xaxurom-zuvub.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/be6fc74e-0e52-47a9-90b7-7f76237bc1ce/85540733181.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/58dbce49-99dd-4103-a8a5-f2838c437f7e/6612454394.pdfIn PDF document text
  • https://s3.amazonaws.com/zamuriza/agenda_21_completo_espaol.pdfIn PDF document text
  • https://s3.amazonaws.com/widofafane/71436992405.pdfIn PDF document text
  • https://s3.amazonaws.com/xumakomowi/bosanitodogukonenimivepa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/87c93ca5-de5e-419c-9836-68d28028e227/81979913929.pdfIn PDF document text
  • https://s3.amazonaws.com/soxukowotomaj/one_key_root_apk.pdfIn PDF document text
  • https://s3.amazonaws.com/viboxikuz/fugupipakidal.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d3e4d6c3-12d9-4b81-88fe-b488ccf84d4c/7445331922.pdfIn PDF document text
  • https://s3.amazonaws.com/tulosa/long_beach_ca_street_sweeping_schedule_2018.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/28cb536e-dbfb-49c2-b7a4-019f3d29fd52/81430768165.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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