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://cctraff.ru/strik?keyword=measure+of+variability+for+nominal+data In PDF document text

  • https://cdn-cms.f-static.net/uploads/4376866/normal_5f8a92104b7be.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387586/normal_5f8e355869964.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365660/normal_5f86f4959787c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380854/normal_5f966e6d15588.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366057/normal_5f870a6b93254.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366660/normal_5f8ff6842c9f7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4402533/normal_5f914948522b8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4407781/normal_5f974783c1f1b.pdfIn PDF document text
  • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/kumiz.pdfIn PDF document text
  • https://liguroxuf.weebly.com/uploads/1/3/4/4/134443360/nakori.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008ea7.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008ea7.bin)
  • http://www.opentle.orgIn extracted file (font_01_sfnt_off0000a0d2.bin)
  • https://s3.amazonaws.com/felasorarabipis/kajuvafagaf.pdfIn PDF document text
  • https://s3.amazonaws.com/jazuravazaguz/constitution_bill_of_rights.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/8170/2301/files/annamalai_university_genuineness_application_form.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/8927/4046/files/azerbaijan_visa_form.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/8494/6850/files/osteoporosis_guideline__2020.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/4751/0435/files/animal_crossing_happy_home_designer_rom_citra.pdfIn PDF document text
  • https://s3.amazonaws.com/ganubatebedoxez/vufon.pdfIn PDF document text
  • https://s3.amazonaws.com/gewuwasi/gapofegonukisidafegasuzi.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_off00008ea7.bin)
  • http://www.gnu.org/licenses/gpl.htmlIn extracted file (font_01_sfnt_off0000a0d2.bin)

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