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/aws?keyword=college+admissions+assistance+workshop In PDF document text

  • https://cdn-cms.f-static.net/uploads/4370530/normal_5f8cacc013f14.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4389353/normal_5f90fb2c66879.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4415745/normal_5f9562ffc25d9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367299/normal_5f8c580348b0a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368985/normal_5f9702cacd820.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000081aa.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000081aa.bin)
  • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000dca8.bin)
  • https://uploads.strikinglycdn.com/files/568a7b1e-6b16-4fbe-90f2-b7cac5258818/9121740211.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/471d2052-923d-457d-b6ae-c7f46bf30364/koes_plus_mp3_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/9241/6946/files/wulaxibi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/58344fee-6903-47ad-b5a4-ba0d11db7ac7/53598672061.pdfIn PDF document text
  • https://s3.amazonaws.com/fajeloninesitel/1827809819.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/lizuzuxav.pdfIn PDF document text
  • https://s3.amazonaws.com/gupuso/43768420731.pdfIn PDF document text
  • https://s3.amazonaws.com/jefobexapulow/tebokaxejuxesawelabat.pdfIn PDF document text
  • https://s3.amazonaws.com/felasorarabipis/difference_between_combinational_and_sequential_logic_circuits.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0504/7464/7732/files/piaggio_typhoon_50cc_manual.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/58c57284-fa76-4bb6-89fc-a77dbc27754d/6223203305.pdfIn PDF document text
  • https://s3.amazonaws.com/daselex/zomuvavusunifajaziwezuxu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/8929/6043/files/rheology_of_bitumen.pdfIn PDF document text
  • https://s3.amazonaws.com/pewibim/zokinitedolajeparo.pdfIn PDF document text
  • https://s3.amazonaws.com/mafavuzenoliki/ecocardiografia_cabrera.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0462/6946/4727/files/23437177507.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/da9b13b4-cd7a-4aa3-861b-23a4e3296f15/sudopimawakeba.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0504/3778/3726/files/nalazowolopuvefe.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://dejavu.sourceforge.netIn extracted file (stream_005_off0000b88c.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_005_off0000b88c.bin)
  • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off000081aa.bin)

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