Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d4b67264f4da08…

MALICIOUS

PDF

82.6 KB Created: 2021-10-26 13:23:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: eec1c7301b05c46b8ce07b67bebb65c4 SHA-1: 9b377960751f88c551e8eaf3c13f421dbcabe325 SHA-256: c5d4b67264f4da084af3aed9264f77fd35316ac3d3ab8d53e3ed2c9923ef8ab9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ntiverification.com/userfiles/file/roxubuwisekajopubogozuti.pdf In PDF document text
    • http://daejonggyoyc.com/userfiles/file/20211008063716.pdfIn PDF document text
    • https://estduquebec.com/scripts/php/xenocode/lib/ckfinder/userfiles/files/92378863339.pdfIn PDF document text
    • http://www.atccs3.it/atccs3/fckeditor/editor/ckfinder/userfiles/files/tinixotewa.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/i7m1i48nfbmvchq1upb7mgm9eq/fulomodajita.pdfIn PDF document text
    • http://vodnik48.ru/content/file/10546559086.pdfIn PDF document text
    • http://baovecongtruong.com/upload/files/rojitivaxalawiwowokasane.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/loxijikifuxopoz.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/5h0eb7vhje4uvpod1s0vn91kf0/katiwisufulisutupez.pdfIn PDF document text
    • http://nbnjl.com/userfiles/files/sovujalo.pdfIn PDF document text
    • http://auburn-properties.com/userfiles/files/kidagi.pdfIn PDF document text
    • http://com123.vn/uploads/file/xifodedadawabenovaxox.pdfIn PDF document text
    • http://ruben.pl/ckfinder/userfiles/files/sapixume.pdfIn PDF document text
    • http://hydrogears.com/survey/userfiles/files/92643527551.pdfIn PDF document text
    • http://bayernglobal.de/userVZ/file/tunanakominug.pdfIn PDF document text
    • http://mindentudor.hu/userfiles/file/vevetuwafixumotatogow.pdfIn PDF document text
    • http://sjccgy.com/userfiles/file/dateluvumigazir.pdfIn PDF document text
    • http://davidhammerstein.org/userfiles/file/tinugozumukanit.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/61859297876.pdfIn PDF document text
    • https://homestayhoian.vn/uploads/image/files/mikamemexatajiwejebon.pdfIn PDF document text
    • https://haruhonpo.com/upload/haruhonpo/files/24365929908.pdfIn PDF document text
    • http://artikos.pl/userfiles/file/fuzifuxamukobulite.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/TxADE9PCSUw/uplcv?utm_term=database+auto+increment+idPDF 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_off0000daa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA5 10728 bytes
SHA-256: 53893c9ad09696ecc1d1bb0235b502b6bcd0e110422b7e6402a36dba816d8cb9
font_01_sfnt_off0000f350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF350 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B62 18816 bytes
SHA-256: 8e4d9990a7cfb75587bde86c40fae44c914e1daf4dc2b5f14a98bbb46d6e4f87

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