Malicious PDF — malware analysis report

Static analysis result for SHA-256 50af43e81a1165b1…

MALICIOUS

PDF

474.8 KB Created: 2022-06-03 13:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-16
MD5: 87123ba7a4c5a02cbeb4724a44cb8617 SHA-1: 346ee04c2b02f11ca3c4d3f22075da7e9fb7da2e SHA-256: 50af43e81a1165b115e8934f9482ea1a03883fc00db4ff8adee53dd996e519ac
131 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4051

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://yubit.co.za/XSRYdR1H?utm_term=libros+de+ingles+basico+pdf+gratis+online+en+latino+gratis PDF link annotation
    • http://consade.com/userfiles/file/natejujovusoxosa.pdfIn PDF document text
    • http://i-mag-ine.com/media/files/rozavufixet.pdfIn PDF document text
    • https://cakesandcupcakes.net/userfiles/files/4985524928.pdfIn PDF document text
    • https://www.ajmetaldesign.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/sivivodigimu.pdfIn PDF document text
    • https://xajupodesuze.weebly.com/uploads/1/3/1/3/131380723/3998932.pdfIn PDF document text
    • https://genifefesabido.weebly.com/uploads/1/3/3/9/133999330/e5a66eff3.pdfIn PDF document text
    • http://bizzarro.be/admin/kcfinder/upload/files/79589233752.pdfIn PDF document text
    • http://sutipatika.hu/userfiles/files/zadetumozipetijabunekup.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/22009530319.pdfIn PDF document text
    • https://albertscience.com/ckfinder/userfiles/files/45666010854.pdfIn PDF document text
    • http://sskj.pl/userfiles/file/gegamulas.pdfIn PDF document text
    • http://www.insight-assessment.com/ckfinder/userfiles/files/dubuvetezevunepo.pdfIn PDF document text
    • http://colombonewsletter.it/admin/data/files/files/fasiziziketenev.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/73495e82c5646.pdfIn PDF document text
    • https://dla-pracownika.pl/pliki_user/File/lorofubuduxinaw.pdfIn PDF document text
    • https://wovusowi.weebly.com/uploads/1/3/4/8/134886666/dajis-nuselemado-kosakukovemu.pdfIn PDF document text
    • https://topazezinin.weebly.com/uploads/1/3/0/9/130969714/vafojope_tesalegu_lizobotu.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/videpeta.pdfIn PDF document text
    • http://parquesanalbertohurtado.cl/ckfinder/userfiles/files/79610683001.pdfIn PDF document text
    • https://rovufeku.weebly.com/uploads/1/3/4/6/134636625/nofaluxixosemo_wiminokufe_modabidule_rupizevotole.pdfIn PDF document text
    • https://xunopigiwigon.weebly.com/uploads/1/3/1/6/131636761/xiwirur.pdfIn PDF document text
    • https://gemigefe.weebly.com/uploads/1/3/4/6/134602098/8732094.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16245878fe614d---suteboxaf.pdfIn PDF document text
    • https://gomopurijovovuj.weebly.com/uploads/1/3/5/3/135390772/wixozabemusijizop.pdfIn PDF document text
    • https://mozabedo.weebly.com/uploads/1/3/5/3/135323929/97c96bbcad8.pdfIn PDF document text
    • https://www.yamanosake.com/js/kcfinder/upload/files/8094120214.pdfIn PDF document text
    • http://beerskiboot.de/img/upload/file/wowesotuvugelawodobib.pdfIn PDF document text
    • https://toxofeleziwogiz.weebly.com/uploads/1/3/1/4/131406173/1a6ff6ae.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622d94b8174b0---wipiwopamig.pdfIn PDF document text
    • https://paixaodecristopi.cinemadossertoes.com/kcfinder/files/fowojarufavetasapixene.pdfIn PDF document text
    • https://www.scmribadeave.pt/sgc/Assets/Plugins/CKEditor/kcfinder/Uploads/files/1421058339.pdfIn PDF document text
    • https://guxuperotasase.weebly.com/uploads/1/3/4/3/134311101/9357481.pdfIn PDF document text
    • https://voromelub.weebly.com/uploads/1/3/4/8/134872571/cc8c4bf4.pdfIn PDF document text
    • https://dakezevowefop.weebly.com/uploads/1/3/6/0/136088489/fenusixerawifir-wujaxipi.pdfIn PDF document text
    • https://sakidadofedoza.weebly.com/uploads/1/3/4/7/134762178/7478676.pdfIn PDF document text
    • https://bewizidovowubi.weebly.com/uploads/1/3/4/7/134716215/pefirizopa-kabulumadabob-xudaxitugu.pdfIn PDF document text
    • https://torexapipafo.weebly.com/uploads/1/4/1/4/141431601/ecfecf408edd93.pdfIn PDF document text
    • http://kaica.org.sa/ckeditor/kcfinder/upload/files/xadobeguvi.pdfIn PDF document text
    • http://www.rhkapadia.org/Admin/plugins/kcfinder/upload/files/buxeruxoz.pdfIn PDF document text
    • https://bepupoxusiboma.weebly.com/uploads/1/3/4/8/134847186/rejapobafetugipejip.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_off0006f93b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006f93b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006f93b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F93B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00071152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71152 10892 bytes
SHA-256: 5486934606bb3b9a012d630eef612abe49262a6adaabd8e95485d2164db2239e
font_02_sfnt_off00072a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A38 18076 bytes
SHA-256: a00d55eab4b695174dbed86800bdee55e2c5dae83a9ebd128f2d11eadad5f4ae