Malicious PDF — malware analysis report

Static analysis result for SHA-256 191a36f93033fa98…

MALICIOUS

PDF

83.1 KB Created: 2021-11-25 22:34:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 752fc2087f32132a7c3131408ee56d7e SHA-1: b9bc7cd75ada4190acd3c42614f911a3c0e8872a SHA-256: 191a36f93033fa985054bbd9b2f8aaa61c0e19ed48ddbb62f2fd26e3aea8caa5
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://www.pzkexie.com/up_files/file/vinolaxowixo.pdf In PDF document text
    • http://rfinshaat.az/userfiles/file/50196861921.pdfIn PDF document text
    • http://hcm-invoice.vn/hinhanh_fckeditor/file/jusutibawuz.pdfIn PDF document text
    • http://brooss.by/userfiles/file/19194123509.pdfIn PDF document text
    • http://peak-experience-europe.com/images/blog/file/kanojasenepidu.pdfIn PDF document text
    • https://petala.gr/userfiles/file/wizotipujijokub.pdfIn PDF document text
    • https://299-45.com/CKEdit/upload/files/73806856306.pdfIn PDF document text
    • https://hometutorsdelhi.com/userfiles/files/61913423124.pdfIn PDF document text
    • http://stamforgtechnologies.com/uploads/robomuwomol.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614bf5c65f03e---sikoxigefoweku.pdfIn PDF document text
    • http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/94115965775.pdfIn PDF document text
    • http://secohthailand.com/file_media/file_image/file/88958576469.pdfIn PDF document text
    • http://propertiesforrent.com/userfiles/file///71339657095.pdfIn PDF document text
    • https://iskoruma.com/upload/ckfinder/files/woranejovukifapemaferaro.pdfIn PDF document text
    • http://6nergy.fr/6nergy/sites/default/user/file/wudud.pdfIn PDF document text
    • http://maquinandoysubastando.com/dleyes/admin/fotos/file/kusijumosikusanu.pdfIn PDF document text
    • http://cu-mbc.com/ckfinder/userfiles/files/sigobegugeve.pdfIn PDF document text
    • https://www.channeloflove.com/ckfinder/userfiles/files/25059596462.pdfIn PDF document text
    • https://ratodua.com/contents/files/54833927045.pdfIn PDF document text
    • http://osteriadelcampanile.com/userfiles/files/pejatunagezagazovitomute.pdfIn PDF document text
    • http://seasonsblinds.com/uploads/ckfinder/userfiles/files/xopizofatobez.pdfIn PDF document text
    • http://solarexperte.ch/fckeditor/editor/images/file/50686780155.pdfIn PDF document text
    • https://worldmedglobal.com/userfiles/files/xexanuge.pdfIn PDF document text
    • https://iimranchi.ac.in/ckfinder/uploads/userfiles/files/romonobuzalexetovipinu.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/tgwjJlsMqHc/uplcv?utm_term=budget+caja+fuertePDF 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_off0000e363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE363 17956 bytes
SHA-256: 56f20ec6b2acfce058c7210451dfe898251313ff0390702f5356530f36cfb19f
font_01_sfnt_off0001115c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1115C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00012800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12800 10404 bytes
SHA-256: 0d4d33a114d70fe3c25de05adc090264e1a0530d412d9cf512488407046bea10