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=spektrum+dx5e+manual+cz PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4445534/normal_6046b42aea789.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4389821/normal_5fe45e1d4d871.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4450426/normal_601978069e937.pdfIn PDF document text
  • http://boleligez.22web.org/xitejinumivufakiminovo.pdfIn macro / runtime command snippet
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/66b9a2ac-1dd6-4923-b8b5-cccb70fcea9b/98660971899.pdfIn PDF document text
  • https://fa53e508-d88d-41cb-897c-7a5b6f1bfcc3.filesusr.com/ugd/361045_21ff18541af94dee8868c43ac92cb9b2.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/a23f1cc1-2953-40e2-910c-ae155247fbf0/ap_biology_2013_multiple_choice_answers.pdfIn PDF document text
  • https://37cc4ef3-276f-49d0-84f3-8bc08bbde6a9.filesusr.com/ugd/e4a5d4_fec434fedcd54b29acf8359f923309cb.pdf?index=trueIn PDF document text
  • https://7fd4abad-31f8-4c52-ae8e-93d0cc7f2af2.filesusr.com/ugd/910e70_28f38604f48d46bfa9d77cd3351f1405.pdf?index=trueIn PDF document text
  • http://xilibosukotijob.epizy.com/fivopix.pdfIn PDF document text
  • https://c9b0c9dc-51ad-46ec-84b2-dbc26df53712.filesusr.com/ugd/b6f588_046cb20e8b594d5dbfff3608496c74b1.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/fa2261a4-c162-4f27-ac4c-e761436b8266/what_is_gong.io.pdfIn PDF document text
  • https://1058d175-53f8-4d86-9201-ae9c1fc74009.filesusr.com/ugd/62a633_31fa839c99804c21b1beaea74b865bcf.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/3b2d0616-4780-4123-a4c8-4aa85bc1f2fa/what_is_active_listening_and_example.pdfIn PDF document text
  • https://ca483b97-61ac-4196-bca0-6b249c18eca9.filesusr.com/ugd/b27199_b493408b110f41b78d55a53c43dacccb.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/f748b908-369c-4893-9d7e-cd1a5478acf1/how_to_start_paint_from_cmd.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/44c58010-cee7-4657-9bff-d1d4c33c7e53/what_is_police_intelligence_operations.pdfIn PDF document text
  • https://3f46bf15-0a8c-4e80-b3e5-a2e3bf90e008.filesusr.com/ugd/8e6e76_47b5b82838f24dda9681961ace5db647.pdf?index=trueIn PDF document text
  • https://c72a6d71-2fad-4f5a-8b7a-a7c165485bce.filesusr.com/ugd/a4966f_24fc4b82cef6400a8a69738eea031029.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/60cd1140-09cb-4973-9332-6f1e0361ca5c/36429425312.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
  • https://uploads.strikinglycdn.com/files/44c58010-ceeIn macro / runtime command snippet
  • http://scripts.sil.org/OFLIn PDF document text

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