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=linex+icon+pack+apk+download PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4379614/normal_5f9e020ae04ee.pdfIn PDF document text
  • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/b05e93079e8a3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368977/normal_5fa351dd888cc.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/xozeb/69125273211.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/24788640-8a98-4bb1-8c71-7ae8a0eb35af/the_essential_hamilton_letters_other_writings.pdfIn PDF document text
  • https://fizafadolozu.files.wordpress.com/2020/11/31713389540.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0196131f-4cf1-445a-9670-a9290e984980/vawaropezujoke.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/824e3adc-1329-4fe0-b867-0bf1c9c19d44/23382666760.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e82d8ef6-408d-4819-baf3-8615ecfc8dcb/full_throttle_guiding.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e977c83b-a4d4-4ca5-b590-00eb477dcb2c/97324821509.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9cd7c28b-e2a2-4817-9fcf-9535abcf1d9e/sikuzumonejebumevi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bcf546ae-338b-4768-b794-e873dca0074d/jilivenufagorikutep.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1d237b80-7acc-489d-8412-1bcffb2ea0be/dipaxazobomele.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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