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/123?keyword=mcgraw+hill+social+studies+grade+1 In PDF document text

  • https://cdn-cms.f-static.net/uploads/4407733/normal_5f93c6ca959f4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375200/normal_5f8d1125cb202.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4414335/normal_5f99b2a25fcf7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4404108/normal_5f916652c341c.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000075fd.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000075fd.bin)
  • https://cdn.shopify.com/s/files/1/0432/0890/0768/files/descargar_chromecast_para_android_apk.pdfIn PDF document text
  • https://s3.amazonaws.com/lokijuronig/fort_madison_high_school_calendar.pdfIn PDF document text
  • https://s3.amazonaws.com/fusidejebi/97645122752.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ddd17e58-c307-4fcc-9b37-93616aa70cf2/tosusojugidevedimujuri.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files2/tudinufofuponumexox.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0505/1701/6747/files/71300043728.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/4624/7833/files/old_yeller_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1c772d62-363f-4e21-a931-e20a869bdf18/26801479424.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0492/2844/7900/files/download_messenger_lite_for_android_gingerbread.pdfIn PDF document text
  • https://s3.amazonaws.com/tigovatolis/what_did_the_sussex_pledge_say.pdfIn PDF document text
  • https://s3.amazonaws.com/turip/gitex_2017_exhibitor_list.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/1989/4425/files/kobalt_air_impact_wrench_manual.pdfIn PDF document text
  • https://s3.amazonaws.com/tetazino/understanding_and_using_english_grammar_5th_edition_free_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/spanish_ar_verbs_preterite_worksheet.pdfIn PDF document text
  • https://s3.amazonaws.com/lanorolowu/adding_integers_with_counters_worksheet.pdfIn PDF document text
  • https://s3.amazonaws.com/muwemivumazulax/hebrew_aramaic_bible.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_off000075fd.bin)

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