Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
  PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
• 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://jacksth.ru/award?keyword=algebra+worksheets+for+7th+grade+pdf PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4501054/normal_5fdaf34fcc2a7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4455174/normal_5fd9aad79b240.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4486742/normal_603daabec78b2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4482618/normal_5fd144ee9533e.pdfIn PDF document text
  • http://securitycheckingbrowservkcom.xyz/39678694221nxtcd.pdfIn PDF document text
  • https://migawireradafus.weebly.com/uploads/1/3/2/6/132695569/535ac102c5b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4505839/normal_5fd7882f08e27.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4485440/normal_5fc7029796ffc.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4369305/normal_5ff77287727be.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4386081/normal_5fcd46b58a86b.pdfIn PDF document text
  • https://jabenawonidibe.weebly.com/uploads/1/3/5/3/135385032/xelenakavutaxeb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4471704/normal_603792b39c8fd.pdfIn PDF document text
  • https://jodakinikap.weebly.com/uploads/1/3/4/3/134375895/sevoz.pdfIn PDF document text
  • http://study-english-05.site/when_was_the_dell_latitude_e6540_madeei2uo.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4384026/normal_5ff84affbd2a2.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4450340/normal_5ffb8f70c455b.pdfIn PDF document text
  • http://smartcoin.design/how_to_get_level_1_crossfit_certificationve2p8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393364/normal_5fd6a2366bbaf.pdfIn PDF document text
  • http://tersq.fun/midnight_sun_tanning_near_mervegy.pdfIn PDF document text
  • https://losewilim.weebly.com/uploads/1/3/4/8/134854933/bemusurusoxim.pdfIn PDF document text
  • https://dezijetide.weebly.com/uploads/1/3/4/8/134864221/f664b06ee0a99f9.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/f00cfb3c-e6ff-4e83-8a5e-e1fcea0b42e3/6924136663.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bed7e94d-3288-45df-8f32-99a8f7e07e71/flowers_for_algernon_quotes_miss_kinnian.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8022d863-5150-468c-b936-01f42ed88516/sat_answer_booklet.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a1494089-077f-4341-82b1-bc18eabb7a77/rabinovivafirigipanoleju.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/27a891df-42d1-485e-9611-414d13b4fc1b/bram_stokers_dracula_characters.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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