Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbef00229c781a64…

MALICIOUS

PDF

173.0 KB Created: 2022-03-11 11:58:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-23
MD5: 33e23a3c1bf909bf6ea5169531a4f410 SHA-1: f1459d67a3a2bba21bec98cd6e332ac4f64ef9d1 SHA-256: cbef00229c781a64352f6b97f45e16a120c7015b13b9360803192b6ab5542d7e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9227

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://2018.letnifestiwal.pl/ckfinder/userfiles/files/80878301253.pdf In PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/3216a71e5943d686a856499d7d1ded43/galetunokagixidodo.pdfIn PDF document text
    • https://verdadeon.com.br/kcfinder/upload/files/33858986366.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1620a4c68eb19d---18345685449.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/sozowepaberojeviwe.pdfIn PDF document text
    • https://e2imgu.ratnatelenet.com/UserFiles/file/segek.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/mutalotabifanaso.pdfIn PDF document text
    • http://oshcongregation.com/userfiles/file/20492592132.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fa2fd36d850---koloxaruxoku.pdfIn PDF document text
    • http://shasenconsulting.com/assets/ckeditor/kcfinder/upload/files/wuwerafexuwewamenowopujak.pdfIn PDF document text
    • https://mimpidia.com/contents/files/80277195737.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/16214f83f54812---69688405250.pdfIn PDF document text
    • http://scandirent-new.ru/uploads/assets/file/legukalaxuporisalen.pdfIn PDF document text
    • https://oldd.adventurenetbg.com/userfiles/file/zasikubalejajigabodow.pdfIn PDF document text
    • http://mhfmjournal.com/data/22/2/55/64/2544879/user/2788947/htdocs/userfiles/file/powewipexusudinok.pdfIn PDF document text
    • https://5ky13lu3-1251.com/contents/files/18015478884.pdfIn PDF document text
    • http://ranc.hyncice.eu/userfiles/file/xosazetobakimifumek.pdfIn PDF document text
    • https://stancijanegrin.com/userfiles/file/newenetedawa.pdfIn PDF document text
    • https://www.oabrn.org.br/2017/_ups/files/files/vuladubitakegovuruwe.pdfIn PDF document text
    • https://phucatgarment.com.vn/ckfinder/userfiles/files/woledotumij.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/p3g77ui01e6s8nuqj5vda1t6ug/bamiralugu.pdfIn PDF document text
    • https://bike-accessories.supersites.gr/content/ckfinder/files/fowobutewud.pdfIn PDF document text
    • http://smartbazar.online/app/webroot/upload/files/30594559524.pdfIn PDF document text
    • http://www.derbysignandgraphics.com/uploads/file/22227202693.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16217c510c49ed---95665040726.pdfIn PDF document text
    • https://mcsfood.com/images/file/pawuronezabowijalil.pdfIn PDF document text
    • http://hotelparkplaza.in/app/webroot/js/kcfinder/upload/files/goduzigoloneganajenawagu.pdfIn PDF document text
    • http://www.negyen.com/admin/ckeditor/kcfinder/upload/files/nixawisiwelejogus.pdfIn PDF document text
    • https://cecinacuore.uplinkcrm.it/writable/public/userfiles/file/46144252087.pdfIn PDF document text
    • http://bebsulmare.com/userfiles/files/17075674995.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/5c028f7470a8f6a0411e754755133102/68854148040.pdfIn PDF document text
    • https://guidetudiant.elite-media.fr/media/77671871016.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16212cb356ccec---tipapasegufinimukusosi.pdfIn PDF document text
    • http://htygroup.com/upload/files/subeg.pdfIn PDF document text
    • http://twfindia.in/userfiles/files/33893138626.pdfIn PDF document text
    • https://yubit.co.za/XSRYdR1H?utm_term=cg+comedy+movie++3gpPDF link annotation
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/8984bd465ca912c93938a603f8415e73/zifijeduwolepoziga.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 extracted file (font_00_sfnt_off000245a7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000245a7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x245A7 10564 bytes
SHA-256: 62556fa420cc6ec5c0f3ef0fddadcc267128d7f855a8c4a0c3afc881cd8bf152
font_01_sfnt_off00025d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25D9E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000274b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x274B9 18180 bytes
SHA-256: 9db0bfc643bd48cdf210b6fc7b059eda82ee688b250d19ed0cabb087b96e140c