Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3a71a38260f60e…

MALICIOUS

PDF

81.6 KB Created: 2021-09-15 22:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 64896ee4e42861938ea229a00c4dce80 SHA-1: baceca4e344aaed03d75279420d2b732c326682c SHA-256: 4e3a71a38260f60eb77c020bc29e75de2929db850a87500797b3c76d38c32d0c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://nomylo.ru/uplcv?utm_term=like+comment+instagram+free PDF link annotation
    • https://benqmusicworkshop.com/fupload/file/tizoleliziko.pdfIn PDF document text
    • https://valubil.com/public/uploads/cms_file/cms_files/35112723405.pdfIn PDF document text
    • http://zvaracskaskola.eu/editor_uploads/system/files/vatefiriwelerudesidefel.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/dou7ep07mma1brp386jeleedr3/56250938684.pdfIn PDF document text
    • http://alompar.hu/uploads/content_files/files/lawaganufis.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/48662734879.pdfIn PDF document text
    • https://tractorpulling-emmeloord.nl/upload/file/47033797819.pdfIn PDF document text
    • http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/beresetenasan.pdfIn PDF document text
    • http://momsystem.ru/public/file/gipabekuzosadabuzesi.pdfIn PDF document text
    • http://olymp-kiev.com/temp/fckeditor/file/vofijisufofi.pdfIn PDF document text
    • https://tefen67.com/userfiles/files/pewodotit.pdfIn PDF document text
    • http://vattucongtrinh.com/userfiles/file/96237520099.pdfIn PDF document text
    • http://ues-rb.ru/themes/ues-rb.ru/files/perelevekajapaferazi.pdfIn PDF document text
    • https://novsport.com/content/File/wamax.pdfIn PDF document text
    • https://kotypsy.pl/ckfinder/userfiles/files/befalaxitala.pdfIn PDF document text
    • http://merlegdoktor.hu/tmp/65808440533.pdfIn PDF document text
    • http://nm-union.ru/ckfinder/userfiles/files/74642365317.pdfIn PDF document text
    • https://www.prieur-equipement.com/ckfinder/userfiles/files/zixup.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/jujisamesorewe.pdfIn PDF document text
    • http://candientu24h.vn/webroot/img/files/nurulofumirud.pdfIn PDF document text
    • https://telliogluhukuk.com/userfiles/file/74073075452.pdfIn PDF document text
    • https://ceccargiurgiu.ro/userfiles/file/vusaxeditazuxo.pdfIn PDF document text
    • 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_off0000dc07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC07 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF419 17032 bytes
SHA-256: 8d8c98e88fff022f0e626ec07e57dd2e29371352a90fb41148dc3b1aa160dd83
font_02_sfnt_off00012049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12049 10684 bytes
SHA-256: 6b6eb674ec03d86e021884ccce4db03a556a6069ed7a55648f8796742ded5121

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