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=harry+potter+epub+vk PDF link annotation

  • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/7803042.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007498.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007498.bin)
  • https://uploads.strikinglycdn.com/files/1a0545d5-6ab1-4e10-9c9d-6fdf33ddd350/fotewirutatinafawewi.pdfIn PDF document text
  • https://lufitoju.files.wordpress.com/2020/11/funajak.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7e4ff2cd-f6fb-4650-bf18-4744ae5bfe80/80480249326.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/619afc59-a4b3-40ac-a802-f252b3d5e783/74121025412.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bcc527dc-e36d-45a8-ba12-c2aca92bda4d/biografia_de_moises_de_la_biblia.pdfIn PDF document text
  • https://ruzusejefefu.files.wordpress.com/2020/11/28950998650.pdfIn PDF document text
  • https://sazaluxi.files.wordpress.com/2020/11/7373716933.pdfIn PDF document text
  • https://jopafez.files.wordpress.com/2020/11/45651714352.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/090cff04-1574-42da-b859-dc627cbb759b/jutikobez.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fa14ef4e-2481-4833-a83f-15f8a7cb5374/96225529637.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5e5c288f-4d11-49c8-98a7-36f3c55378eb/241605237.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 extracted file (font_00_sfnt_off00007498.bin)

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