Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de33dd98a11c2a9…

MALICIOUS

PDF

405.3 KB Created: 2022-03-04 08:56:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: d1126946db172cc6e19a9890b3f70fde SHA-1: b7638733e6e2593a7ceb1d9774e63ed8839000d2 SHA-256: 4de33dd98a11c2a9084236fa166e3cce604f372af94ee05cc81c289576e59f2e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5702

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 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.
  • 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://norin.co.za/XSRYdR1H?utm_term=the+final+countdown+trumpet+sheet+music PDF link annotation
    • http://nhatrangpalace.vn/app/webroot/upload/files/vupewilegufogovefaj.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0cc9615732060f09ddd21e1c88425cff/91034098268.pdfIn PDF document text
    • http://mpapir.ekopapir.com/images/files/lemesi.pdfIn PDF document text
    • http://goksirkrupskimlyn.pl/img/upload/files/11854312880.pdfIn PDF document text
    • http://thenikharvconsultancy.com/userfiles/file/nogadesovu.pdfIn PDF document text
    • http://tonyprins.nl/images/uploads/file/72606425699.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1621a521871d90---vevisolajedusupikovapa.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16217d4d451c5c---mebobik.pdfIn PDF document text
    • https://associazionebriciole.it/public/file/28197722993.pdfIn PDF document text
    • https://aslplastic.com/ckfinder/userfiles/files/76570549998.pdfIn PDF document text
    • http://michael-dhom.com/webseiten/file/narawezasuw.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1621ed06aefd09---76058459580.pdfIn PDF document text
    • https://funeralinnovations.com/copilots/upload/files/26505354526.pdfIn PDF document text
    • http://embauchecadre.com/kcfinder/upload/files/sijofopebebipod.pdfIn PDF document text
    • http://www.tivafa.hu/upload/file/89444833730.pdfIn PDF document text
    • http://www.korsun.ic.ck.ua/js/kcfinder/upload/files/jebukutikapujowuvovigiles.pdfIn PDF document text
    • http://hkbroadwin.com/userfiles/fumosukeninari.pdfIn PDF document text
    • https://saleskerala.com/ckfinder/userfiles/files/tukugewotod.pdfIn PDF document text
    • https://poetnazrul.com/kcfinder/upload/files/pemovitejaluxewe.pdfIn PDF document text
    • http://borsasetelsis.cat/admin/kcfinder/upload/files/fikusi.pdfIn PDF document text
    • https://banderlogclub.ru/Files/file/woxodebikigos.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/4b2ef423007224e2de156244f74b6480/49637596660.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/2d43d312802ddafde5ed27efdd97ffb6/65562448369.pdfIn PDF document text
    • http://www.dinapart.net/frontend/web/kcfinder/upload/files/xepobuwuvi.pdfIn PDF document text
    • https://konyaalotaksi.com/userfiles/file/xojekulorijowifozobesowov.pdfIn PDF document text
    • http://remproekt-m.ru/admin/ckfinder/userfiles/files/xavulenifasiwu.pdfIn PDF document text
    • http://johnledesma.com/userfiles/file/wulaxulisinume.pdfIn PDF document text
    • https://escritacontabilidade.net/fotos/news/file/88902088807.pdfIn PDF document text
    • http://www.assistvaleur.co.jp/inc/kcfinder/upload/files/39575283393.pdfIn PDF document text
    • https://imagebrandstudio.com/userfiles/file/zutoxadudasufipenigiluka.pdfIn PDF document text
    • http://tnet.site/kcfinder/upload/files/48731666780.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_off0005cfe3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005cfe3.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005cfe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFE3 11036 bytes
SHA-256: 8df2955ef953b605f2d0224e875b83e438160a7e22b6de235306d33991a3defb
font_01_sfnt_off0005e973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E973 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0006008d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6008D 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_03_sfnt_off0006168b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6168B 17976 bytes
SHA-256: 9d5e1e5e14aedf585e962d0f91c6357a1e060cc3137f939b719fd182af951098