Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de135f50d6c0ccc…

MALICIOUS

PDF

255.3 KB Created: 2022-03-19 09:14:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: f43e522ac948c2b23f759897e4d9fe85 SHA-1: edf452b18396e076e7ece2ab5e024dce7a5589c7 SHA-256: 4de135f50d6c0cccd596870c305aaab3572cd204617d2cfc82c32bddc4e38611
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

Heuristics 7

  • 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.
  • 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://tonitomov.com/picture/file/62385914983.pdf In PDF document text
    • https://www.starvisaservices.co.uk/application/elements/plugins/kcfinder/upload/files/muvetinobaxidak.pdfIn PDF document text
    • http://ubytovani-budejovice.cz/picture/vtextu/file/14452150194.pdfIn PDF document text
    • https://decoveinvestment.com/userfiles/file/wediw.pdfIn PDF document text
    • https://www.houseofwax.cz/kcfinder/upload/files/58789768583.pdfIn PDF document text
    • https://sprzedazmiodu.pl/files/files/rozokomema.pdfIn PDF document text
    • http://sevenseahotel.com/uploads/images/files/91296429199.pdfIn PDF document text
    • http://szboerzuo.com/upload/file/xivora.pdfIn PDF document text
    • https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/4599606195.pdfIn PDF document text
    • https://rachelrom.com/rescontent/file/jotufodiwegebaxujaga.pdfIn PDF document text
    • https://aedwea.com/upload/foto/rofunuvijudatofovilafide.pdfIn PDF document text
    • https://istanbulbalbir.com/upload/ckfinder/files/32304443774.pdfIn PDF document text
    • https://singhaniabrothersltd.com/ckeditor/ckfinder/userfiles/files/pilelududob.pdfIn PDF document text
    • http://studio70.eu/userfiles/files/ditokavi.pdfIn PDF document text
    • https://fitvital.hu/userfiles/files/timulokurabalamejamodeg.pdfIn PDF document text
    • http://mariancozma.com/_user/file/zazolalumunixudexewu.pdfIn PDF document text
    • http://auto-ecole-carnot.communication-pro.fr/public/1218/contenu/file/supamodetamuganaxa.pdfIn PDF document text
    • http://enidental.com/userfiles/file/20220204050127.pdfIn PDF document text
    • http://chronoflex-dz.com/app/webroot/assets/js/kcfinder/upload/files/negetowoxesik.pdfIn PDF document text
    • http://rsti.biz/files/fck/file/bubimavadup.pdfIn PDF document text
    • http://opersan.com/file/66676975599.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16210325b71224---74641560099.pdfIn PDF document text
    • http://birdwatching.sk/media/file/nilavaposufakeli.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1621ce9f2e00de---51693028075.pdfIn PDF document text
    • http://wu-pao.com/upfiles/editor/files/51826853592.pdfIn PDF document text
    • http://a-spa.org/ckeditor/kcfinder/upload/files/pegodediwafowena.pdfIn PDF document text
    • https://concurs-euclid.ro/upload/fck/bidoxiganorotij.pdfIn PDF document text
    • http://theartofdesign.nl/ckfinder/userfiles/files/rasabekowokenizupe.pdfIn PDF document text
    • https://pracowniatechart.pl/fckpliki/file/sodunutam.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16221c97bab416---50316785680.pdfIn PDF document text
    • http://wxeina.com/userfiles/files/24419814077.pdfIn PDF document text
    • http://hflbdq.com/uploads/file/16140813548.pdfIn PDF document text
    • https://taechoclub.com/FileData/ckfinder/files/20220221_72C7719FA176A971.pdfIn PDF document text
    • http://grupomagister.com.br/kcfinder/upload/files/wufavolavonavusebexepu.pdfIn PDF document text
    • https://www.uncme.org.br/Gerenciador/kcfinder/upload/files/38383029961.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/99280679746.pdfIn PDF document text
    • http://henri-ruch.ch/doc_pub/file/kasem.pdfIn PDF document text
    • http://ideatity.com/ckfinder/userfiles/files/18284147275.pdfIn PDF document text
    • https://partnermind.cz/images/files/fonirererixexadafexude.pdfIn PDF document text
    • http://urdu-hadith.com/survey/userfiles/files/11345311145.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=injustice+gods+among+us+crack+fixPDF 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 extracted file (font_00_sfnt_off00038a83.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00038a83.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00038a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38A83 11148 bytes
SHA-256: 8ff7d6ba4bf3a2b9dc9e45965ac8e47973b13ce5196ceb173b6290d2567d9a33
font_01_sfnt_off0003a464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A464 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003bb7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BB7F 19292 bytes
SHA-256: f7691ed00d58441a617f79392778f3b96c254cec017b4d5676aa17bbc1a17f51