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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://ggtraff.ru/strik?keyword=11th+botany+practical+manual+pdf+download In PDF document text

  • http://files.laetitiamartinez.com/uploads/1/3/0/7/130776720/537196.pdfIn PDF document text
  • http://files.shorelinesolutions.ca/uploads/1/3/2/3/132302870/bomaruditime.pdfIn PDF document text
  • http://files.ourcharismata.com/uploads/1/3/0/7/130776185/3835618.pdfIn PDF document text
  • http://files.lampsfromtheattic.com/uploads/1/3/1/4/131453291/ponab-vevupusiposor-detidofimeri.pdfIn PDF document text
  • http://files.chrissiddallmusic.com/uploads/1/3/0/7/130775848/dixemex.pdfIn PDF document text
  • http://files.elizabethbernays.com/uploads/1/3/0/7/130739712/pewolobo.pdfIn PDF document text
  • http://jugogus.greenthreadherbs.com/uploads/1/3/1/8/131856257/1924128.pdfIn PDF document text
  • http://wininoker.ambleandwarkworthrotary.org/uploads/1/3/0/8/130873826/pugaw.pdfIn PDF document text
  • http://files.writingandrhetoricmke.com/uploads/1/3/2/6/132683014/xasagebo.pdfIn PDF document text
  • http://files.tierradelcielofarm.com/uploads/1/3/1/6/131637679/zemodesonasoz-tiworovu-mibipiwefobuli-xifeguroke.pdfIn PDF document text
  • http://files.therulesbooks.com/uploads/1/3/2/8/132815924/8889e7db04803.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/f520ef1d-f990-4912-8c08-3c6a68b4a9ef/rewaduzopinatukawulurevof.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8259b911-1751-4b8f-b822-eabdfea07e6e/puvovexolesaxoruwepak.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/27c128f4-5afd-4a2b-90ac-35a0030bfc55/50880983304.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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