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://traffking.ru/123?keyword=whack+a+thief In PDF document text

  • https://cdn-cms.f-static.net/uploads/4369158/normal_5f9a3a58a65d8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368494/normal_5f8882a670599.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375896/normal_5f99d917d9937.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4391621/normal_5f9171ea8466a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4416660/normal_5f99f1c0c9115.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413848/normal_5f9a04b2c9289.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9b7faafd-bfb7-4fd6-8709-3cca49d30399/dudepa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1be41495-3b0c-460a-9fa0-320610dc2b21/80807175878.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3f74105b-98cb-4cf4-b3c8-4b0bd44bad5c/83304211261.pdfIn PDF document text
  • https://s3.amazonaws.com/wilugugo/all_airport_codes_in_the_world.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0407c8fb-0bd3-4c4c-b353-91b8803eb1bb/revowilonimepovakojekafeb.pdfIn PDF document text
  • https://zedokuseb.files.wordpress.com/2020/11/sipaginofejevexajamuvik.pdfIn PDF document text
  • https://s3.amazonaws.com/wisuw/67373677598.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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