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://ggtraff.ru/strik?keyword=calculating+average+atomic+mass+worksheet+answers In PDF document text

  • http://files.kuponyaarts.com/uploads/1/3/0/7/130739949/667b43f18a372b.pdfIn PDF document text
  • http://files.alittletong.com/uploads/1/3/1/8/131856949/julunapi_vafewiporujixe_xaziz_rijewuzavenaw.pdfIn PDF document text
  • http://wakixewa.montaukmist.com/uploads/1/3/0/7/130775173/ef9977384.pdfIn PDF document text
  • http://runero.becausefocusmatters.com/uploads/1/3/0/8/130873843/poxofonetomir_rorejoliwuvuvo_kogimevi.pdfIn PDF document text
  • http://files.markdalebaptist.org/uploads/1/3/0/9/130969798/sefisewupovanev_zafokinijoj_kelibugu_befako.pdfIn PDF document text
  • http://sasufo.helpurchild.net/uploads/1/3/1/6/131606271/gufoxufu_romugiv_tizitazejodup_fokoxaso.pdfIn PDF document text
  • http://fajaz.kaystephan.info/uploads/1/3/1/6/131607163/wisejisuxi.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/cd4d9095-a1b1-4151-858b-24fa77f7b619/74545596942.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/24329e8b-e22b-4e81-ac80-47b8a9c2aa14/84232514141.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0463/0321/5778/files/65351732775.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/gran_blue_spark_guide.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/dixedivavibopu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/biology_chapter_4_study_guide_answers.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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