Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6433d9ee9eed4f…

MALICIOUS

PDF

71.5 KB Created: 2021-09-26 11:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: cd340af6fd513c6c5c60312097e8b60c SHA-1: 7f82addf019159b848af7346e803facf8460646b SHA-256: 2b6433d9ee9eed4f1d5af560c20464234e26699d723b8e1934b1a65109e9d166
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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://ezastupitelstvo.sk/editor_uploads/system/files/puruzoji.pdf In PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/de7cba6256ef72480c9740dacea7ae76/78230028600.pdfIn PDF document text
    • http://kystar.net/filespath/files/20210923002649.pdfIn PDF document text
    • http://duquenne-moteurs.fr/webroot/upload/files/90415423756.pdfIn PDF document text
    • http://gaestehaus-am-erlkoenig.de/img/editor/file/vawizuronipakixuma.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/41836178962.pdfIn PDF document text
    • https://birgatour.mn/js/ckfinder/userfiles/files/sapin.pdfIn PDF document text
    • http://thaifilmind.com/UserFiles/file/25331303805.pdfIn PDF document text
    • https://designmaster.in/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/80481472179.pdfIn PDF document text
    • https://faguaflowers.com/images/admin/file/salubovivukizazelexo.pdfIn PDF document text
    • http://snabsz.ru/ckfinder/userfiles/files/3178628119.pdfIn PDF document text
    • http://imreelectric.sk/uploads/file/rosubitoxosetinerodopen.pdfIn PDF document text
    • http://farmina.ru/uploads/files/61022087000.pdfIn PDF document text
    • http://image.dlib.vn/libedu/news/bachviet/20210925/file/44184240019.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/25220a30ceb4888213f669b439d37029/wusowupisivogizilubapiwer.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/9ff673208879d3f19eae76741f3005fc/xobolutatofozejovukekus.pdfIn PDF document text
    • http://aquamedia.cn/ckfinder/userfiles/files/sunodatok.pdfIn PDF document text
    • https://muahohangnhat.com/app/webroot/uploads/files/53144355306.pdfIn PDF document text
    • https://flomogroup.com/upload/files/61153210494.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161419de15beff---42390177012.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/161311519de49a---loxovubajer.pdfIn PDF document text
    • https://fiscalonline.eu/app/webroot/files/userfiles/files/matuv.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d0149bef10---kabadapi.pdfIn PDF document text
    • http://aluminial.pnh.pt/js/ckfinder/userfiles/files/wawilodef.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=hoga+toga+app+download+apkPDF 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_off0000b627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB627 16772 bytes
SHA-256: ec33de32f80ae7b943f81badf700bcb336e27b752c6a3276f131a0a5048d2d24
font_01_sfnt_off0000e11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF934 10244 bytes
SHA-256: 4d7cd51d612ec2580fff59c1655a2fa6b6f60162e80fb62f83320cbef867cd7b