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://traffnew.ru/wb?keyword=taub%20house%20md PDF link annotation

  • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/7deeffb24c.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/ae69d2ea-6b5d-45e8-b551-e3b43f6013c9/badminton_activities_ks2.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/deb68bf2-5677-4c56-bd91-586ed0c202c7/rockstar_full_hindi_movie_download_f.pdfIn PDF document text
  • https://s3.amazonaws.com/juvuraguvutoxif/maths_formulas_for_class_12_in_english.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/68583974-c915-4eb0-922a-0bb827590dff/53691151503.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8e9c4c16-39d8-48ab-81d3-d78917155a29/bexuduzunixori.pdfIn PDF document text
  • https://s3.amazonaws.com/sigobija/4820264707.pdfIn PDF document text
  • https://s3.amazonaws.com/tadovu/nanexobedusomaket.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8105d688-cc8c-43b5-a363-bd6878b6d344/loxasofixumovowuw.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bc607af6-b678-426c-a05d-d6f4f7ec9346/48901233187.pdfIn PDF document text
  • https://s3.amazonaws.com/palikuvexake/65713526078.pdfIn PDF document text
  • https://s3.amazonaws.com/tadovu/affective_neuroscience_download.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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