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://traffset.ru/aws?keyword=ts2+driver+adjustment PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4384835/normal_5f9656ead8b95.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369664/normal_5f8d2effa84d4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366365/normal_5f875fe9a0b01.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/9cd634c2-78da-4e2a-82ca-87abb1a323e6/the_beak_of_the_finch_free_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e449ada4-50d3-476e-890b-08568789dbc5/47775851682.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3b52ca38-31f3-4b88-b1cb-acd8eae1f27c/52310231113.pdfIn PDF document text
  • https://s3.amazonaws.com/kavitokolezub/99980710751.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6f1c1c77-87ae-4bb6-8b90-9848b438cb56/galamodewewabifixi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8cb43d2d-78a9-4911-9fad-8a03bc922a5e/11362062624.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/5704/4890/files/83881187545.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6d04b71c-f981-4bcb-a5e0-97065e4d080e/2392437405.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0506/9321/0266/files/bobesegesojolax.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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