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.
• Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
  Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
• 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
• 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.club/wix?keyword=chrome+for+ubuntu+18.+10 In PDF document text

  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_49de9b72dd4b4994967c082c2c7f984e.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/c836c3_cc7943a9cfb74b9c82afa11b16f3370a.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/11276f_34293e70ddea4a5ba0d405153b59d33c.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_e707caf40bd040a69b6ad77e1cd1982a.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/625844_8fabd2b004be4203bdc04c933b6aaf63.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/f68081_c6d03e78628540308549e58ae5f1127a.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/469aea_2c0fa2c8517842beac6cec302c1f3565.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/4614/2106/files/vafan.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/4464/1685/files/web_design_email_marketing_templates.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/5651/9578/files/basic_pencil_drawing_lessons.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/7437/1235/files/mobemodajilakafelifalal.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/3f8d85_fb8e65dd6fc143078377c1a60484d0ad.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_82d68c2fe8a948b0bf6390ae701f5144.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/9ff9b8_3f689dcebf764623bd61ebcd13de8a38.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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