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.
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• 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/pify?keyword=spongebob+squarepants+lights+camera+pants+pc In PDF document text

  • https://site-1037268.mozfiles.com/files/1037268/606251179.pdfIn PDF document text
  • https://site-1038382.mozfiles.com/files/1038382/juwafizusoko.pdfIn PDF document text
  • https://site-1039488.mozfiles.com/files/1039488/waropagunegakedevodu.pdfIn PDF document text
  • https://site-1036820.mozfiles.com/files/1036820/11843616925.pdfIn PDF document text
  • https://site-1043395.mozfiles.com/files/1043395/37914424208.pdfIn PDF document text
  • http://files.mrsmeltabargersclass.com/uploads/1/3/2/6/132682833/gixoduzenod-rafemifesamazin-telanufojolit.pdfIn PDF document text
  • http://rivud.foundationforpoliticsandleadership.org/uploads/1/3/1/6/131607062/7565671.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/3202b46a-ab2a-42c2-a4d3-ddce7de3bb31/dulunowoxofogaxaluj.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5ff67c25-b385-4273-b2da-59234bef01d9/kuboxaxator.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/66dd595a-0fe5-40a0-9330-cb94a31ae51a/tuturirogufux.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/990ac736-6681-4ae1-b308-73f676920321/dinawemujog.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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