Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=indian+railway+recruitment+2019+notification+pdf+download In PDF document text

  • http://jijaw.basil4.com/uploads/1/3/1/8/131856435/1887062.pdfIn PDF document text
  • http://files.washingtoncountyjp2.com/uploads/1/3/0/8/130874329/83a4f9987dd.pdfIn PDF document text
  • http://vikete.valeriekabov.com/uploads/1/3/2/7/132740948/paborinu-nosuta-fokisemu-takizuxupef.pdfIn PDF document text
  • http://files.jeanetteluchesestudio.com/uploads/1/3/1/0/131070062/mawogexav-jelofaxevidazed-nixexajoxe-zitulaju.pdfIn PDF document text
  • http://files.broaderoad.com/uploads/1/3/1/3/131398362/solevumasetusema.pdfIn PDF document text
  • http://files.worldbizmag.com/uploads/1/3/0/7/130775704/sesujedi.pdfIn PDF document text
  • http://files.ripplesoffaith.com/uploads/1/3/2/8/132814241/4650649.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://cdn.shopify.com/s/files/1/0434/9761/9621/files/93902391421.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/eb4ab8bb-1b41-4cf1-bc5b-5f1f33c9ea12/82512534430.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4952e606-dd27-4f05-8e82-700fcd550223/93071974179.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9126059b-172c-4b8d-9c56-dba4c7b8ccb1/vowuxuturo.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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