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://cctraff.ru/strik?keyword=libro+simulacion+solidworks In PDF document text

  • https://cdn-cms.f-static.net/uploads/4376878/normal_5f8b10484cde4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367624/normal_5f89f2e7619e5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368781/normal_5f88a58d17587.pdfIn PDF document text
  • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/tapalijojubobowenuf.pdfIn PDF document text
  • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/ruvolojerusiped.pdfIn PDF document text
  • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/8580958.pdfIn PDF document text
  • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/9349453.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371790/normal_5f8852a98e295.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369909/normal_5f87f63daea56.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369161/normal_5f89d2839bd10.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366050/normal_5f870b1485849.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372737/normal_5f8b41403fa56.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365553/normal_5f87500bb1602.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://uploads.strikinglycdn.com/files/b4943eb0-ff18-4670-901f-8c04def38ad7/selagedaweturolifomidu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2c8f9349-8f20-4740-8e35-f20e32abe833/19801077454.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cd581d7e-42b3-48d3-9631-dde4e89c755a/doxumipe.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/54da73a9-039e-4ae4-b8e5-6ab51ff2bae6/15165337225.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6edcdaf7-4a07-4def-8cea-4a62fd670b5f/2398878152.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d00fef2d-d652-46ba-b6cb-507b3b91b397/2017_ap_calc_free_response.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/21fbbfc3-4495-4e75-b176-bf2da1305031/28823908601.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

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