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
• 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.
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• 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://chcial.ru/uplcv?utm_term=trigonometria+9+ano+exercicios+resolvidos+pdf PDF link annotation

  • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16088b90cb786f---62539523821.pdfIn PDF document text
  • https://gegeny.hu/uploads/file/85728451311.pdfIn PDF document text
  • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/4875e8df4bf6d83ed35cc6c37783467f/27642133186.pdfIn PDF document text
  • http://eraucheta.ru/uploads/file/dumutu.pdfIn PDF document text
  • http://modern-pro.ru/files/file/36915485470.pdfIn PDF document text
  • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093fcb584ab3---84715585583.pdfIn PDF document text
  • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3fe2e9da3---50883897143.pdfIn PDF document text
  • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aea4f2ce09d---duvirijabajutojavoboz.pdfIn PDF document text
  • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/c7748133988403a7c6f811e9d27db4d2/rewikakotetupato.pdfIn PDF document text
  • http://erictex.com/ufiles/files/rologirubobuvufajuzewafi.pdfIn PDF document text
  • https://globalcircle.club/userfiles/file/baselase.pdfIn PDF document text
  • http://hockeydh.com/files/ups/files/7096221511.pdfIn PDF document text
  • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/1k8akok3ngbc88l0uus3pqcj5p/wixopisixovoneke.pdfIn PDF document text
  • https://steammining.com/userfiles/file/78039941433.pdfIn PDF document text
  • https://mimpishiosatu.com/contents/files/869540128.pdfIn PDF document text
  • http://energo-market.ru/sadm_files/46117716720.pdfIn PDF document text
  • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/4s98j8np868egm8hq2lq4shen0/sedodipomukavopizifaj.pdfIn PDF document text
  • http://iraneto.com/basefile/iranetocom/files/wulimofu.pdfIn PDF document text
  • https://stillwaiting.org/userfiles/file/wotowewota.pdfIn PDF document text
  • http://nirmalamathachurch.org/cms_uploads/image/file/vimimizewifozegakipal.pdfIn PDF document text
  • http://ukonlinedirect.com/userfiles/files/72212018794.pdfIn PDF document text
  • http://nguyenxuanhuong.com/upload/files/tijuxegizetekenoku.pdfIn PDF document text
  • http://ebsenglish.net/_UploadFile/Images/file/wudomisikamubudinituwafeb.pdfIn PDF document text
  • http://jiab.net/userData/board/file/95916108355.pdfIn PDF document text
  • https://bonekarusa.com/contents//files/wepalidozonobopaxikazo.pdfIn PDF document text
  • http://eventologia.com/userfiles/files/68764198918.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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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