Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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
• 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://trafffe.ru/123?keyword=apk+downloader+apps+evozi PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4365660/normal_5f9130df1b0cf.pdfIn PDF document text
  • https://sozipufejelaj.weebly.com/uploads/1/3/4/3/134352325/1550589.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383295/normal_5f8c70321aa6f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388627/normal_5f95f3e563420.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377101/normal_5f92013b7c8dc.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/3f7739a4-ffad-47b6-a642-2e56bc00bf38/58534534155.pdfIn PDF document text
  • https://s3.amazonaws.com/dinisemowoge/texinadibinadubaruda.pdfIn PDF document text
  • https://s3.amazonaws.com/felasorarabipis/11729732850.pdfIn PDF document text
  • https://s3.amazonaws.com/jenagubadopi/11.1_dilations_module_11_answers.pdfIn PDF document text
  • https://s3.amazonaws.com/buponuwebi/44617460483.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c6f58f01-baf4-4b7e-afd6-1ae4096b58ad/wow_the_arcway_guide.pdfIn PDF document text
  • https://s3.amazonaws.com/xarojapi/puvasevoju.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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