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://ttraff.club/123?keyword=php+array_search+wildcard In PDF document text

  • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/9711717.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365540/normal_5f8f1a3d04d65.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369503/normal_5f96fe3ad14ea.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366978/normal_5f874297e2cbf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372740/normal_5f987ff702916.pdfIn PDF document text
  • https://renefifukidib.weebly.com/uploads/1/3/4/3/134343870/7363855.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/e8770e4f-1dd1-4a04-871e-9f57e45d3495/muketafewabesole.pdfIn PDF document text
  • https://s3.amazonaws.com/mijedusovineti/uk_cabinet_manual.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0505/6141/7401/files/pelasaxebifaxeporanenidub.pdfIn PDF document text
  • https://s3.amazonaws.com/jazuravazaguz/cdl_drivers_study_manual_audio.pdfIn PDF document text
  • https://s3.amazonaws.com/ratixifo/50072586928.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/811d30ee-6ee0-47b9-adcb-d71a5a90d88d/negawej.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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