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://gettraff.ru/strik?keyword=quimica+inorganica+libros+pdf+descargar In PDF document text

  • https://site-1038612.mozfiles.com/files/1038612/daveranowotobakof.pdfIn PDF document text
  • https://site-1037230.mozfiles.com/files/1037230/92014444712.pdfIn PDF document text
  • https://site-1036678.mozfiles.com/files/1036678/vekurujenokibalogexorul.pdfIn PDF document text
  • https://site-1039419.mozfiles.com/files/1039419/55047931539.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006550.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006550.bin)
  • https://cdn.shopify.com/s/files/1/0486/7355/4582/files/what_is_dtp_vaccine.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/st_charles_property_tax_search.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/zoruba.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0486/7991/1574/files/54860665897.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/51473354609.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0459/6534/4935/files/fapimajakidawul.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/1246/4550/files/ousd_2016-17_calendar.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d9f96572-f775-4ccc-8e7a-6fa51f36909a/zovonakemarenow.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/331cc45b-f3ae-4ddd-b73b-dd1a7bd10d16/kosapeve.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/30eed340-6ac4-4d51-a068-15689f0153ec/98095615367.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b67df67b-16ea-48c6-8b28-94e1af02a95e/50919112148.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/603b6aae-a4b6-47d4-ae67-6ad706182951/legolefopolipoguwozod.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_off00006550.bin)

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