Malicious PDF — malware analysis report

Heuristics 6

• 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.
• PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
  PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
• 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/wb?keyword=r%20markdown%20pdf%20slides In PDF document text

  • https://s3.amazonaws.com/jiwisi/82920057563.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393511/normal_5f8fb535e6e2f.pdfIn PDF document text
  • https://s3.amazonaws.com/lebaxa/63470435212.pdfIn PDF document text
  • https://s3.amazonaws.com/mijedusovineti/20641950854.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4405414/normal_5f9b3013db2cf.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000659e.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000659e.bin)
  • https://uploads.strikinglycdn.com/files/7afb897e-7ded-4b26-8196-266ccb34dd47/fumuvozotaxajigalisexowo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ae0114cf-c55e-45d8-b159-88b23998024f/17902486866.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/142f56c5-5b29-4c54-94c6-c28e47098edb/big_daddy_1999_full_movie_free.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/9329/4749/files/palazojofokofuxubajoj.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/932b6fb0-1440-47c4-afaf-07d013539d91/glencoe_entrepreneurship_and_small_business_management.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0a035307-cb4a-4b4d-b404-41bb44602b9f/ridubogojego.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8563adee-2a89-4bf0-b661-139f87465ecd/1420931696.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/momentum_equation_fluid_mechanics.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/9933/8934/files/pnc_bank_app_android.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/4898/7545/files/63020167872.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/8468/6525/files/tenseishichatta_yo_novela_espaol.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_off0000659e.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00009d1c.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00009d1c.bin)

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