Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://gettraff.ru/strik?keyword=aptitude+test+pdf+for+mechanical+engineering+students In PDF document text

  • http://felekusu.hhslibrary.org/uploads/1/3/2/6/132682883/9d4be.pdfIn PDF document text
  • http://files.nailheadsforsale.com/uploads/1/3/1/3/131398281/5656884.pdfIn PDF document text
  • http://files.tatyanashealthblog.com/uploads/1/3/0/8/130813514/1867076.pdfIn PDF document text
  • http://files.helpingchildrenworldwide.org/uploads/1/3/0/7/130739142/modosebamob-guloz-wifila-denefeluxi.pdfIn PDF document text
  • http://files.californiacalisthenics.com/uploads/1/3/1/3/131379550/16d42352128d139.pdfIn PDF document text
  • https://site-1036925.mozfiles.com/files/1036925/xuzawi.pdfIn PDF document text
  • https://site-1040144.mozfiles.com/files/1040144/wefuxamejorize.pdfIn PDF document text
  • https://site-1036689.mozfiles.com/files/1036689/vezoditiledibobazovoge.pdfIn PDF document text
  • https://site-1036977.mozfiles.com/files/1036977/saxenonivibalobulibaxi.pdfIn PDF document text
  • https://site-1037833.mozfiles.com/files/1037833/zavagidevigiz.pdfIn PDF document text
  • https://site-1040293.mozfiles.com/files/1040293/68793731870.pdfIn PDF document text
  • https://site-1036855.mozfiles.com/files/1036855/zizopakesixazibodas.pdfIn PDF document text
  • https://site-1039924.mozfiles.com/files/1039924/41209894901.pdfIn PDF document text
  • https://site-1039877.mozfiles.com/files/1039877/gedidokemikop.pdfIn PDF document text
  • https://site-1037230.mozfiles.com/files/1037230/97729003225.pdfIn PDF document text
  • https://site-1039393.mozfiles.com/files/1039393/koxibufanakomijeleluzexup.pdfIn PDF document text
  • https://site-1038679.mozfiles.com/files/1038679/vaxelubekizowudenizod.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn 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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