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.
• Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
  Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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://ttraff.ru/wb?keyword=henrico%20public%20schools%20reopening In PDF document text

  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://fedorahosted.org/lohitIn PDF document text
  • https://static.usrfiles.com/ugd/2274a7_8e454dffd31a48088cc08eff3482881c.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/7836c9_4c0a7d0ba76e4bc89f406f117f21239d.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_d48170fc2f3d4ee7b1f0ec795bda5ad2.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/d8e941_5ec8875375b14186aa41cf1c726095b2.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/9421c8_53fb097f2d4541e08efc75b90d41b0f5.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b6edda_538796f287d94f6693b5e61d267d7df5.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/3776/0408/files/lanuw.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/6901/3158/files/42218645175.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/6209/4745/files/livevipugupunuxa.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/vagipe.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0447/6190/7351/files/angular_js_and_node_js_tutorial.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/thomas_calculus_including_second_order_differential_equations.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/8859/3571/files/12155468678.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/3040/3477/files/seasons_and_ecliptic_simulator_worksheet.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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