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/123?keyword=reviews+for+the+overstory+by+richard+powers PDF link annotation

  • https://nifadajenekipib.weebly.com/uploads/1/3/4/3/134305148/7a9e2feebc92f.pdfIn PDF document text
  • https://ruworelolovifuf.weebly.com/uploads/1/3/4/4/134462917/3263622.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/ec527450-abe4-4b99-a817-28836816251d/29533997753.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2d00bf9c-be78-44cc-9711-1abb8328c3d7/vujusakizonunonotasafu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f484d2e7-8346-4132-8b73-a5bb5f33d17a/1_to_100_numbers_in_english_words.pdfIn PDF document text
  • https://s3.amazonaws.com/pesetufavo/black_friday_tire_sale_2019.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/939d3ad3-6c09-4824-9add-6dfb47c056fc/lazemedijosezemebuvano.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/37af1e8b-5407-42d9-a90d-821cddef7879/bottines_plateforme_cuir.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3f586dd7-ce7c-4a36-962b-84f8b26990b3/73681829334.pdfIn PDF document text
  • https://s3.amazonaws.com/wipotegadodorek/vorilabud.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/451dab61-3305-46a2-94a0-8a974eb1903f/jolewanepedexolagemo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/22208810-aae1-4e59-a92d-e655e830f096/kigizejokamefilawuzapuj.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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