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://ttraff.cc/pify?keyword=bilibili+video+er+firefox In PDF document text

  • http://files.fourstatesymphonicwinds.org/uploads/1/3/1/4/131437249/divozes.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/1/0434/3490/1660/files/amplitude_shift_keying_using_matlab.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/6646/6216/files/noradaninagevilivexi.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/7936/6811/files/cantares_mexicanos.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/5491/6003/files/aplasia_medular_tratamiento.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/7080/7461/files/jenkintown_pa_police_reports.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/1186/4738/files/schengen_visa_application_form_belgium.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/8511/0177/files/romamesuxelufidikusi.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/5047/5413/files/fowekakanavifesaduterafaj.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/7547/7407/files/juzubaxasul.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/xovegebiwukenupe.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/lobomega.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/5731/4983/files/23058595546.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
  • https://savannah.gnu.org/projects/freefont/In PDF document text
  • http://www.gnu.org/licenses/In PDF document text
  • http://www.gnu.org/copyleft/gpl.htmlIn 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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