Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b4e06c5ac48662…

MALICIOUS

PDF

69.5 KB Created: 2021-10-30 08:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-29
MD5: 10f13013ab7bdc643232168d90546c85 SHA-1: 894a623522b9c85ac15614a62a518663eb67eeaa SHA-256: 72b4e06c5ac486620a555b44dfb61657e7be773d787a8d76187d8f0c2ce7ef15
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • 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://master.plus/wp-content/plugins/super-forms/uploads/php/files/f1dfce7358ac3b41146ab2b00f58a2ed/23404459855.pdf In PDF document text
    • http://rakuteriyakicanogapark.com/uploads/files/17104340281.pdfIn PDF document text
    • https://vgi-vn.vn/app/webroot/img/files/tikupokex.pdfIn PDF document text
    • http://membre3.trajetplus.fr/userDocs/file/dobubisumozatobunolusow.pdfIn PDF document text
    • https://agros.net/uploads/file/48878667641.pdfIn PDF document text
    • http://consade.com/userfiles/file/zumupiputonoro.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/36284195825.pdfIn PDF document text
    • http://www.motocams.cz/ckfinder/userfiles/files/pepetusugunubuxiwileguzo.pdfIn PDF document text
    • https://nucamsa.es/userfiles/files/voxezexudozuxekajubewa.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/f9450e5e8f1f322d3460986ae086fd9f/74851951848.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1616c45edbbcd9---99623019686.pdfIn PDF document text
    • https://wildnaturetravel.com/File/nomutalujedoledupododofi.pdfIn PDF document text
    • http://tjsyjdq.com/v15/Upload/file/202110102235459651.pdfIn PDF document text
    • http://parkergeneralcontractors.net/userfiles/file/tepexetefufugo.pdfIn PDF document text
    • https://client-sms.com/ckfinder/userfiles/files/fugimu.pdfIn PDF document text
    • http://tomei4x4.jp/js/upload/files/makasutinifekilowetaf.pdfIn PDF document text
    • https://medtek.vn/storage/file/52174332218.pdfIn PDF document text
    • https://francoisdaulte.com/ckfinder/userfiles/files/91262524979.pdfIn PDF document text
    • https://cahayamimpi1.com/contents/files/xaxosurofewito.pdfIn PDF document text
    • https://matricula.arendic.cl/files/nulemaluxo.pdfIn PDF document text
    • http://gallery4walls.com/upload/editer/file/39940828914.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/3e9922123d9d7a7a084a57394f7dcca3/rizuminixivalubilovo.pdfIn PDF document text
    • https://greenvalleykerala.com/ckfinder/userfiles/files/gokepef.pdfIn PDF document text
    • https://groupburuemas2.com/contents/files/zozaf.pdfIn PDF document text
    • http://www.autoservis-hubatka.cz/admin/upload/ww/file/bamokif.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/cmwvf4RlXg4/uplcv?utm_term=after+tax+401k+to+roth+iraPDF link annotation
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB384 10420 bytes
SHA-256: 47e45168fdd619d66addf31ea16406d099dde3c75ccd85006758fc1e79562da6
font_01_sfnt_off0000cb61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB61 14748 bytes
SHA-256: a8ae2576f4e3cf42d6853dd4abdd10cdf2a279341786e7e95ef38ec39c890240
font_02_sfnt_off0000f088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF088 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1