Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://ggtraff.ru/aws?keyword=vidukathai+pdf+download In PDF document text

  • https://cdn-cms.f-static.net/uploads/4365584/normal_5f90dde63df84.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4401545/normal_5f91c002e77f7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383327/normal_5f8db77457eec.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4389365/normal_5f90ffbfe8e22.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375891/normal_5f9513078fc21.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380871/normal_5f925eb46535f.pdfIn PDF document text
  • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/b628c54eef4e3.pdfIn PDF document text
  • https://fobuxowomi.weebly.com/uploads/1/3/4/2/134235628/4c70a2ab74cf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372085/normal_5f9268b46e3a5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369904/normal_5f8ce6acead0f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383800/normal_5f8fff28726f2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365584/normal_5f8b30bd1ea63.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408187/normal_5f9462d16f60a.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/93de7589-e5b4-424f-aa09-f71e24167636/41634023094.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/07628cab-ca7d-4ec2-ab32-c84b351b3428/rakitarunaxipuboti.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/58d58c90-d347-476f-ac72-4f21fb7fc299/8464308963.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d9660da7-f14d-4706-ba83-4a22995d6329/34336217038.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/63b5202c-38fb-40fa-8418-a9599e717f5c/jovalakavusadejipojevuz.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/91530dc4-1bda-48c5-a1e3-e78252ad9e65/pejezekoxixakekobimiximop.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9e89851e-8626-44b8-8edd-2fbfb1465c4c/forebop.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/533c2923-dc4b-4117-b3d9-963416220a7c/gusidizupobijejori.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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