Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://nomylo.ru/uplcv?utm_term=zero+hour+harry+dent+pdf+free+download PDF link annotation

  • https://spa-salon.ru/ckfinder/userfiles/files/92921626351.pdfIn PDF document text
  • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b349c59b16---47394417999.pdfIn PDF document text
  • http://weingut-suppan.at/files/fovupevodikiwaxorim.pdfIn PDF document text
  • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/161334a7a3ba32---sageguniginosewarulejupa.pdfIn PDF document text
  • http://etepi.pt/js/ckfinder/userfiles/files/7762261087.pdfIn PDF document text
  • https://bbox.ru/images/shared/file/4170528362.pdfIn PDF document text
  • http://tradotel-riviera.com/file/boled.pdfIn PDF document text
  • https://masterjobintl.com/ckfinder/userfiles/files/futix.pdfIn PDF document text
  • https://magnanelli.com/userfiles/file/21766618877.pdfIn PDF document text
  • http://hwayoung.kr/upfile/files/26233996334.pdfIn PDF document text
  • http://gandolfiarchitetti.com/userfiles/files/44121604728.pdfIn PDF document text
  • http://schoonhovensvrouwenkoor.nl/ckfinder/userfiles/files/78831403643.pdfIn PDF document text
  • http://tutek.eu/userfiles/file/94024230573.pdfIn PDF document text
  • http://espwireless.net/uploads/file/kirupefimagaviparakoz.pdfIn PDF document text
  • http://ore-processing.ru/d/files/68308183746.pdfIn PDF document text
  • http://naosgym.com/userfiles/files/43906345285.pdfIn PDF document text
  • https://ambulatorioveterinariosismondi.eu/file/xiledeketoxonudezuf.pdfIn PDF document text
  • https://deltagroup.bg/uploads/file/76778412100.pdfIn PDF document text
  • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161428142d58b9---3326725035.pdfIn PDF document text
  • http://ptairsupply.com/userfiles/file/40468671542.pdfIn PDF document text
  • http://bojovesporty.cz/userfiles/file/97059952330.pdfIn PDF document text
  • https://tskrea.com/userfiles/file/515594384.pdfIn PDF document text
  • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/rsj2e7ic2dc5pvgao7tmsiveli/bukewa.pdfIn PDF document text
  • https://safrano.pl/userfiles/file/78221839280.pdfIn PDF document text
  • https://ginecologmuresan.ro/ckfinder/userfiles/files/jitiriwefo.pdfIn PDF document text
  • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/dg7uniibal5tel5q9vs4dv5p90/kifoxuzabukomotapitame.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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