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://gettraff.ru/strik?keyword=ark+repair+item+command In PDF document text

  • http://kuwomo.audiokusini.com/uploads/1/3/1/3/131383314/4363904.pdfIn PDF document text
  • http://files.posadaconcepcion.net/uploads/1/3/0/7/130776619/4062396.pdfIn PDF document text
  • http://files.bestgeekdeals.com/uploads/1/3/0/7/130776272/wutomu_gokaf_fazofaxakolaxo.pdfIn PDF document text
  • http://files.besimplytimeless.com/uploads/1/3/1/6/131606348/caf480d472c.pdfIn PDF document text
  • https://site-1036925.mozfiles.com/files/1036925/zaruban.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/a3da175c-7fa7-428d-8a2a-769b61ebe253/51781907752.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e41da4f2-cecb-49e7-b80e-8d74727e6a31/sovatu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2a62cf4a-63ef-49a2-b562-c5c0d0d632e0/vukatelojirava.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/725c232a-2783-4256-b2a1-fd1bebc71ad6/5241604799.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8d0f9de1-4c11-4e7a-9526-c71f30ddb80f/juzusadoxanazilurozi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/490d8b77-ae6f-4b45-89f0-4a7b2e7ba28e/30949963810.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/03b1b022-dbaa-4a82-9591-e3a7dd5365fd/13094705608.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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