Malicious PDF — malware analysis report

Static analysis result for SHA-256 191f85ae43cb941b…

MALICIOUS

PDF

86.1 KB Created: 2021-08-15 00:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: d735ff39e9487eef12ec584f311d528a SHA-1: 4c2da0681a199a2afe720ea4c992e562636d725a SHA-256: 191f85ae43cb941baae587149e45d4f0f69e511e2dce7ad71a0e8a1965f79ce8
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • 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://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/42j43gs5ves6oons4diomdhh81/96410736016.pdf In PDF document text
    • https://bem-sa.com/img/file/zerubebab.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/cc4aee17e239fa883c64a65fda5eb01c/36000009843.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/695d7d2014736db90bf6a2dac7aba370/semozubaz.pdfIn PDF document text
    • http://mallenmediations.com/mallenmediations/images/userfiles/file/67211981662.pdfIn PDF document text
    • https://evrenmentese.com/upload/ckfinder/files/41605528978.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/04d1b4da11b9c0c2e602e0a3628d375e/vatusadegategomameva.pdfIn PDF document text
    • http://mistral-paints.cz/userfiles/files/88119849105.pdfIn PDF document text
    • http://elateridae.com/images/FCKeditor/file/29020847809.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160829b3c6aa35---fowigobudapim.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a395fa7de77---ravavotironabiboguxip.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160e816fbb2dd0---35846674432.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/77fb4be431e6555720b8b271635abfb8/99597608092.pdfIn PDF document text
    • http://www.jobsincrete.gr/images/_user_na/file/lenenatutovel.pdfIn PDF document text
    • http://krcatikyonetimi.com/userfiles/file/musomewixugijanosules.pdfIn PDF document text
    • http://docando.es/js/ckfinder/userfiles/files/55195879312.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/topogovitiwoguvekemibix.pdfIn PDF document text
    • https://latrinquette.com/upload/editor/file/5158431426.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f8a217afe---29352541761.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/7236ea8c4f8fbb3779b07a96e84a99d9/5889039818.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160aac99346404---40669156642.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb23348729b---51205085805.pdfIn PDF document text
    • https://osakadentalcare.com/contents//files/45971505572.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b0b529cf676---sijuxuz.pdfIn PDF document text
    • http://williamshudson.org/clients/3/35/35bf74ce48b5c120232fd40fb4fe3e45/File/66577195173.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=descargar+el+traductor+de+ingles+a+espa%C3%B1ol+gratis+para+celularPDF 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_off0000e775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE775 17904 bytes
SHA-256: 864e26016fbee1db638903da79d3f8bbf73f8f21a285962391d3356311163858
font_01_sfnt_off0001154b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1154B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D62 10996 bytes
SHA-256: 7f252073b4033256d692d7ee6658b837fc6c573c499713bd184921edfbd2d9a5