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.
• 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://philabc.ru/uplcv?utm_term=software+updates+for+android PDF link annotation

  • http://dogwarts.ru/sites/default/files/file/tebakoxorunaz.pdfIn PDF document text
  • https://tatvan.in/userfiles/file/vezigeme.pdfIn PDF document text
  • http://qdcmd.com/data/files/20728708953.pdfIn PDF document text
  • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614da0e908239---vetivixe.pdfIn PDF document text
  • http://webinaris.org/ckfinder/userfiles/publics/files/97541967252.pdfIn PDF document text
  • https://cengilli.com/icerik_images/file/leremififuralisubijafaxen.pdfIn PDF document text
  • http://dreamsurgeryen.net/ckupload/files/3857251069.pdfIn PDF document text
  • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/7l2kdv1j1o87a0fi1p13q0dev5/wikasaniforodipite.pdfIn PDF document text
  • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/b69f506d871a392beac7fe1a999dba23/69642400884.pdfIn PDF document text
  • http://dxczx.com/ckfinder/userfiles/files/20210907_031949.pdfIn PDF document text
  • http://www.salac.cz/ckfinder/userfiles/files/6420566339.pdfIn PDF document text
  • https://pacantioquia.org/aym_image/files/36837187082.pdfIn PDF document text
  • http://mikailang.com/userfiles/file/20210901165251_1858732235.pdfIn PDF document text
  • http://studiogeologicotrilobite.com/userfiles/files/43163272371.pdfIn PDF document text
  • http://scarpatti.com/files/9054619973.pdfIn PDF document text
  • http://tmacfashion.com/ckfinder/userfiles/files/xorikonesavemew.pdfIn PDF document text
  • https://maintogelonline2.com/contents/files/49679364214.pdfIn PDF document text
  • https://xn--b8qxb801j.tw/upload/files/positugemo.pdfIn PDF document text
  • https://ooo-kenk.ru/userfiles/file/95479269429.pdfIn PDF document text
  • https://rcot.org/userfiles/file/lopupemirawafomixijutug.pdfIn PDF document text
  • http://www.elstar.ru/uploads/files/pomed.pdfIn PDF document text
  • http://enricobarraco.com/files/sezunegadula.pdfIn PDF document text
  • http://shrlie.com/upload_fck/file/2021-9-1/20210901222527547341.pdfIn PDF document text
  • http://kronospan-mofa-hungary.hu/editor_up/wugufikexuxaboxesitoxeke.pdfIn PDF document text
  • http://studiomedicoveterinariobellucci.eu/userfiles/files/3771983611.pdfIn PDF document text
  • https://m-astar.com/UserFiles/files/vezizukiwukekaf.pdfIn PDF document text
  • http://inlikeflintlogistiIn macro / runtime command snippet
  • 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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