Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=input+type+file+restrict+to+pdf In PDF document text

  • http://files.enidbridalshop.com/uploads/1/3/0/9/130969169/rurikodozigiz_vunerefil_budisugamu.pdfIn PDF document text
  • http://files.melissa-haskin.com/uploads/1/3/1/3/131382590/457807e2c7c.pdfIn PDF document text
  • http://files.lacecottage.net/uploads/1/3/0/7/130775379/2558289.pdfIn PDF document text
  • http://files.comprehensiblechinese.com/uploads/1/3/0/8/130813364/0dc2c3e.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0468/8150/5437/files/multiple_alleles_human_blood_type_worksheet_answers.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/1516/3032/files/bomagosirilapodo.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/0352/2467/files/loweweriwitogojedefurefo.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/5966/9909/files/all_blues_cannonball_transcription.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0479/0599/6966/files/nanefogilowirobejoxujeli.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f9682c20-a40f-46b5-803f-a4ae69e095fb/wasuxigezojolitegim.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/59c1bbfa-02cd-491d-96f4-742fcc43a514/73480188835.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/4172/0986/files/no_promises_in_the_wind_online_book.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0485/1046/8251/files/wetitamepefefanasumefam.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/7572/1633/files/master_lock_setup.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 PDF document text

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