Malicious PDF — malware analysis report

Static analysis result for SHA-256 550101da7bb58aa5…

MALICIOUS

PDF

74.8 KB Created: 2022-05-14 01:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 84e5876f32cd76fc71161be6b3f8cc2a SHA-1: a4fbf17dde621510ddaca2c6a289c454053370db SHA-256: 550101da7bb58aa5ece6b1af0ecd38c666f3303506989f552afb07d6dfef636d
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://alefart.ru/admin/ckfinder/userfiles/files/daledikixisonagonoradi.pdf In PDF document text
    • https://rifakinuzofu.weebly.com/uploads/1/3/0/8/130815009/1132853.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/162269ef52879f---laruxowedewexisapi.pdfIn PDF document text
    • https://sibanomo.weebly.com/uploads/1/3/0/9/130969588/zodimin_vuredu_zajeverazuxo_vaduvuxijenajel.pdfIn PDF document text
    • http://www.serenissimaservizi.com/files/62265552341.pdfIn PDF document text
    • https://e-s-c.fr/lib/ckeditor/kcfinder/upload/files/suledabotisupopazuzazu.pdfIn PDF document text
    • http://imssp.by/data/images/fxeditor/file/dajusosesokemekibelevozeb.pdfIn PDF document text
    • http://sadrabfars.com/upload/files/3628994788.pdfIn PDF document text
    • https://at1-turbo-j3t.com/contents/files/67986142741.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1627a53ceef0b5---2623994019.pdfIn PDF document text
    • http://architettoangeli.it/userfiles/files/zafevawevomowurawusopomix.pdfIn PDF document text
    • https://tavafawenu.weebly.com/uploads/1/3/4/3/134395038/8047048.pdfIn PDF document text
    • http://kenshopvn.com/uploads/files/zukinejajikerut.pdfIn PDF document text
    • https://kingsnews.org/app/webroot/js/image/files/tekilulox.pdfIn PDF document text
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/rifav.pdfIn PDF document text
    • http://artvideo74.ru/upfiles/files/zoruse.pdfIn PDF document text
    • https://vefoduga.weebly.com/uploads/1/3/5/3/135302220/suvebefuxu-xajab-wosotanap-mogogisategiwuv.pdfIn PDF document text
    • http://lonerangerfanclub.com/ckfinder/userfiles/files/43118423450.pdfIn PDF document text
    • https://sawepaxir.weebly.com/uploads/1/3/1/8/131858353/e6e55c0.pdfIn PDF document text
    • https://yubit.co.za/YmrXLWy8?keyword=certificate%20of%20authenticity%20template%20pdf%20printable%20templates%20freePDF 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_off0000bd66.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000bd66.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD66 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD578 17400 bytes
SHA-256: 6fbccb4358e6d2d179715f2b657d2a69b47501d550a62df5c3013a196119acdd
font_02_sfnt_off00010311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10311 11268 bytes
SHA-256: 4a85a4d9b1f4b90a103514e33828e0e61bab5e047c5c4ef7ec10d156a2c9c73e