Malicious PDF — malware analysis report

Heuristics 5

• 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.
• 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.com/wix?keyword=b.ed+books+in+gujarati+pdf+free+download 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/0d2908_aad829afd2f4466ca16c3afb1254c955.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_efc6fe953ec6424396a962789aae88c5.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_9a1e20dd27f2416ea1efae8364f4157a.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_4456d4e8d39a47e0b54fa0663237473a.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_aabcc7ab164b4acaa7215e490d6c237b.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_765281d8729b4e3083c224be80ecbd8c.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/10b11f_601ef5a58f004aa6afb9687e4c468db8.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/353d00_c7f3933fc0c840bba38133dde51d7281.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/fef806_67c6139895ac48d68ddc8e1c76c319c3.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/15ebe2_4f0c2e54b7604a8e8306484d96575b1d.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/5bb01c_227beaeb4e0e456da197437b27e6cc10.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/ea78e0_087cca7f76f34a9e96dce9a7b7983acc.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/e3ed1f_0537dde156164dc78bf531211e6818a2.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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