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.cc/wix?keyword=borderlands+2+playtime In PDF document text

  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
  • http://fedorahosted.org/lohitIn PDF document text
  • http://www.opentle.orgIn PDF document text
  • http://www.indictrans.orgIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_e91ff4138f344b0bbd5ffb5a6cf491fe.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_4256e1a6ffbf4d08a811cea1e5adb1dc.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_8f537d568060488083cfdf7324a94cd4.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_37699ed67b604364ac23f41f386d8115.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_99b5213a15f74a8fbdafc03698a44b45.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_afe59185dfcb4e8d95f30066b694701f.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_a0e00486f5c64b769699da40d123d8b1.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_1da6a373220e4bd8a96f493599bd8d68.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_4f413ce93a3648a7b8e8486be09583c4.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_bd8e3d9ad5a3470aa862d8405275c42c.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/90788102503.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/2277/7496/files/tnusrb_answer_key_2020_pdf_download_in_tamil.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/9285902749.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://www.gnu.org/licenses/In PDF document text
  • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
  • http://www.gnu.org/licenses/gpl.htmlIn 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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