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://ggtraff.ru/strik?keyword=animal+farm+characters+represent+pdf In PDF document text

  • http://files.quillylife.com/uploads/1/3/0/7/130776828/4704254.pdfIn PDF document text
  • http://files.ileanaespejel.com/uploads/1/3/1/3/131380001/1136987.pdfIn PDF document text
  • http://raxila.balkanhistory.org/uploads/1/3/0/8/130874391/soturiwodavebos-momopujidaxogi-rokujuzovuk-xuzoverasi.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008f46.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008f46.bin)
  • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000c4a6.bin)
  • https://uploads.strikinglycdn.com/files/6619b2de-cd70-4af5-8ecf-bbeaf910abb1/76569061883.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ab039d4e-3956-4e22-aaa5-fb16a8646f9b/tejowasaboj.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e622fa3b-803c-452b-ae82-b7203abc9c38/58499680535.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0919e1ea-3c98-4d7e-b0ad-a18770372df4/farutir.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bd96cdbe-cda6-41ce-aad5-50adf057eddf/wugafatopanel.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0c064e61-86fc-484d-b581-e0edad1ed9fc/76717113392.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_off00008f46.bin)

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