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.
• SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
  PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
• 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://ggtraff.ru/strik?keyword=bypass++limit+uptobox In PDF document text

  • https://site-1039210.mozfiles.com/files/1039210/petuvujejupujiv.pdfIn PDF document text
  • https://site-1037141.mozfiles.com/files/1037141/nuzedawijivobipusax.pdfIn PDF document text
  • https://site-1039813.mozfiles.com/files/1039813/nepuvufu.pdfIn PDF document text
  • https://site-1036902.mozfiles.com/files/1036902/35841726052.pdfIn PDF document text
  • https://site-1039314.mozfiles.com/files/1039314/57284489571.pdfIn PDF document text
  • http://files.techreviewsandnews.com/uploads/1/3/2/6/132696274/vitadepix_xoxutipuvovo_buxilubulunisu_gikone.pdfIn PDF document text
  • http://files.dalyspenshop.com/uploads/1/3/1/3/131380065/ffd848883.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://cdn.shopify.com/s/files/1/0480/3362/8319/files/39153158617.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0480/0433/3717/files/busipurozajojijevenaz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/17398795690.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0479/5914/6663/files/rubbermaid_trash_can_lids_32_gallon.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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