Malicious PDF — malware analysis report

Static analysis result for SHA-256 79328c7906eb5ded…

MALICIOUS

PDF

89.5 KB Created: 2021-10-30 10:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: b9c91d01c8199219a2e74ea23d6a4446 SHA-1: e6fa2f9347013b2d71d1eacd193a3f9785dd1e08 SHA-256: 79328c7906eb5dedf24521d46a4b55d6c07ee09aacba1a2af3260e7f31b73373
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • 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.
  • 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://thienlongadv.com/upload/files/8422382520.pdf In PDF document text
    • http://puginternational.com/ckfinder/userfiles/files/93366366036.pdfIn PDF document text
    • http://gyliver.ru/files/files/39813958021.pdfIn PDF document text
    • http://ariogalospspc.lt/userfiles/file/tarez.pdfIn PDF document text
    • https://mayorista.cristobalcolon.com/userfiles/file/36128013199.pdfIn PDF document text
    • https://ceylinpin.com/calisma2/files/uploads/tibujapajoboxumabibexot.pdfIn PDF document text
    • http://cachnhietcacham.vn/Images_upload/files/3398550920.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/bef585dafce0570443a387abdf6f52a5/fipodipurat.pdfIn PDF document text
    • http://garantc.ru/userfiles/file/21339781394.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/imqhrgbq8cmk2kvobgpck2luu9/89681687162.pdfIn PDF document text
    • http://htygroup.com/upload/files/rarijikodupamex.pdfIn PDF document text
    • http://sanitaerprofi.ch/fckeditor/editor/images/file/nivivuvazuzazuvunamudira.pdfIn PDF document text
    • https://growyourmoney.in/userfiles/files/42766391194.pdfIn PDF document text
    • https://www.sesc-am.com.br/Selecao/ckfinder/files/kobuxolozix.pdfIn PDF document text
    • https://mauspro.net/upload/files/doxubima.pdfIn PDF document text
    • http://lumieye.com/userData/ebizro_board/file/noxatufe.pdfIn PDF document text
    • https://gitedu.in/ckfinder/userfiles/files/bulozixiwamevamonepefaj.pdfIn PDF document text
    • http://pizzeriadevita.it/userfiles/files/8540642693.pdfIn PDF document text
    • http://truhlarstvi-strakonice.cz/files/file/76068142927.pdfIn PDF document text
    • http://onishi-kyosendo.jp/archive/40830435836.pdfIn PDF document text
    • http://talleresjpg.es/img/file/30669106820.pdfIn PDF document text
    • https://cebrium.ssnn.ro/images/rodetaf.pdfIn PDF document text
    • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/11066139786.pdfIn PDF document text
    • https://kabelkyaobuv.sk/editor_uploads/files/84182970653.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b20084c0b8---30104969920.pdfIn PDF document text
    • http://neurooperations.com/ckfinder/userfiles/files/bobopunidalijijididaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/KGDyd8lM0uI/uplcv?utm_term=neil+strauss+the+game+pdfPDF 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_off0000f71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71D 10796 bytes
SHA-256: f79c95cffcdff90d02f1a586c6b50e9c993538322498ba14c1c4768a96711ea7
font_01_sfnt_off00010fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000127dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DC 18644 bytes
SHA-256: 1cf6baf19d5c79bdbf4cdaed6ab85713b8856055b367a044af18d6a4d1cdd034