Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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://jumiwimov.ru/strik?utm_term=how+to+use+ergobaby+360+front+facing PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4501632/normal_5fe7ce2cc1dc2.pdfIn PDF document text
  • http://hookup154.site/1099706126332754.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4483589/normal_60160d01f0d24.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4411489/normal_5fea18ff3bd7c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4390068/normal_604d1724e4395.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4492253/normal_5ffd1f0c5cd15.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4489844/normal_5fc8104d89384.pdfIn PDF document text
  • http://fisujerekuvij.getenjoyment.net/advanced_dungeons__dragons_players_handbook.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4497078/normal_5fe4804a4f9d3.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4485929/normal_600351f7c7d00.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365627/normal_6037527ca1a77.pdfIn PDF document text
  • http://dfwshootersupply.com/how_to_change_ip_using_cmd3o0zn.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4482854/normal_5ff961236d845.pdfIn macro / runtime command snippet
  • https://47ab6ce1-aee6-4086-a8e7-31fe393d2411.fiIn macro / runtime command snippet
  • 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
  • http://kadoxosin.atwebpages.com/22256332248.pdfIn PDF document text
  • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_6f73b1b4aff644239c374813883578f5.pdf?index=trueIn PDF document text
  • https://1094d5c0-a920-47c7-a1de-7e2d56a92d84.filesusr.com/ugd/47b1e8_ceffd75bfa4d4353af0431929e2759af.pdf?index=trueIn PDF document text
  • http://solugivewatewa.myartsonline.com/pathophysiology_of_ischaemic_stroke.pdfIn PDF document text
  • https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_585901061cc34bc79f8176778161a588.pdf?index=trueIn PDF document text
  • https://47ab6ce1-aee6-4086-a8e7-31fe393d2411.filesusr.com/ugd/afbef4_5d3ecfcc214649c1973b32d5684de11a.pdf?index=trueIn PDF document text
  • http://jowosos.myartsonline.com/capacitor_bank_connection_diagram.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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