Malicious PDF — malware analysis report

Static analysis result for SHA-256 55226dde73d59427…

MALICIOUS

PDF

173.5 KB Created: 2022-02-23 14:13:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: a156851418197f711a09a078194d18c2 SHA-1: 9eda8078dcab2a75c9417bd53ea69a4f3c3c3f75 SHA-256: 55226dde73d59427f8cb7e49b986285c24e7ccddc82887eeaf3247d19f65bf30
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7590

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
  • 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 http://koddous.com/userfiles/file/71457422064.pdf In PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1616b51960fc63---pofof.pdfIn PDF document text
    • https://marcvandewiele.com/userfiles/file/20228589462.pdfIn PDF document text
    • http://www.flexformule.nl/kcfinder/upload/files/nokid.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/161415c812b18e---gomupijoregeke.pdfIn PDF document text
    • http://gusanhightec.com/userData/board/file/46812496519.pdfIn PDF document text
    • http://boonfagrandhome.com/user_img/files/venodibebosugazenol.pdfIn PDF document text
    • http://valk.dn.ua/js/kcfinder/upload/files/7780807728.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160fd1793097e7---wagululamexalipofudit.pdfIn PDF document text
    • http://airzo.net/userData/board/file/sutiwezoz.pdfIn PDF document text
    • https://n-zvuk.ru/upload/file/10954503090.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/34390142274.pdfIn PDF document text
    • http://www.szinespillanat.hu/admin/ckeditor/kcfinder/upload/files/74708005593.pdfIn PDF document text
    • https://lmcmanager.com/ckfinder/userfiles/files/volufuwofesuxesole.pdfIn PDF document text
    • https://shriramsteels.in/public/ckfinder/userfiles/files/powoporirum.pdfIn PDF document text
    • http://luxlustry.ru/img/upload/tolaletopurulipavu.pdfIn PDF document text
    • https://www.colline-eternelle.com/ckfinder/userfiles/files/gurigu.pdfIn PDF document text
    • http://e-hematologica.com/users/file/88706484747.pdfIn PDF document text
    • https://forssh.com/userfiles/file/ketawamomejubem.pdfIn PDF document text
    • https://freshchannels.com/home/sites/freshchannels/public_html/ckfinder/userfiles/files/35743118843.pdfIn PDF document text
    • http://kite-surf.sk/files/nosisuv.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/kixodezalaxosilebijoka.pdfIn PDF document text
    • http://www.icmtravel.net/assets/ckeditor/kcfinder/upload/files/26634020418.pdfIn PDF document text
    • https://ghnservizi.com/file/wejegixirivubibowidika.pdfIn PDF document text
    • https://vpmemorial.net/images/file/98181141782.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/ci49bp021fjmeepf76nj4er5m0/5368700462.pdfIn PDF document text
    • https://aptitudeclass.com/ckfinder/userfiles/files/rovofoviwadebag.pdfIn PDF document text
    • http://isiknakliyatmasko.com/img/editor/image/file/tajurimim.pdfIn PDF document text
    • https://termokingbt.com/ckfinder/userfiles/files/42701203123.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=usg+sheetrock+acoustical+sealant+sdsPDF 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 extracted file (font_00_sfnt_off00024684.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00024684.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24684 18508 bytes
SHA-256: c2902c40a6c4ca6dd9d8e407d6c2733754aeb6f21610d9d2c489aa88e141f674
font_01_sfnt_off000276c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x276C9 10848 bytes
SHA-256: e634b17d97c6c5636ae6ed4abc50b90dbbcc9d4cc08e7dfd591362c50492f50f
font_02_sfnt_off00028f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28F99 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9