Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd79af4e87027823…

MALICIOUS

PDF

382.2 KB Created: 2022-02-13 06:18:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: ef2752489af9eeef8dc7e1a2c5a10a4d SHA-1: 0e3a0a83c843b2a0c6e9b5cfd09ca6de907d6d51 SHA-256: cd79af4e8702782339cc10f606625365e47e937010033981637f7a5077fc6428
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6037

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://sunuf.co.za/XSRYdR1H?utm_term=6th+grade+math+worksheets+printable PDF link annotation
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/f4e280e0b064cc33619519208cad5cb5/377305500.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/jm895ba1d0bskqr6nck9b96g27/tivovosulagaxeni.pdfIn PDF document text
    • https://hilanguage-com-tw.triangle-design.com/files/23950687049.pdfIn PDF document text
    • http://cs-golfclub.com/ckupload/files/xifuboguwi.pdfIn PDF document text
    • http://agriturismolataggiasca.eu/userfiles/files/wifalovozunoxezudopojal.pdfIn PDF document text
    • http://zhuoer.ltd/userfiles/file/ranijigireworewoxisuras.pdfIn PDF document text
    • https://marathonlaval.com/userfiles/files/16436825275.pdfIn PDF document text
    • http://elmarahtravel.com/public/kcfinder/upload/files/zomaxikozajag.pdfIn PDF document text
    • https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/68164888129.pdfIn PDF document text
    • http://twfindia.in/userfiles/files/lerowejujupolaxil.pdfIn PDF document text
    • http://broadmoor79.com/clients/864886/File/16812304729.pdfIn PDF document text
    • http://actlogistic.vn/upload/editor/files/3030985324.pdfIn PDF document text
    • https://staging.smartmoneymatch.com/ckeditor/kcfinder/upload/files/judakixoziwam.pdfIn PDF document text
    • http://copingconversations.com/userfiles/file/35183943844.pdfIn PDF document text
    • https://maintogelonline2.bet/contents/files/xugonulomewutozexi.pdfIn PDF document text
    • http://vdtonline.vn/static/uploads/editor/files/xexelesizeburowevoni.pdfIn PDF document text
    • http://parentini.it/userfiles/files/35968680030.pdfIn PDF document text
    • http://chiari-web.com/ckfinder/optimist/files/guxanumebanonaxu.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/lotutufoxadoza.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/n5btejam256i9135lf93f68k5f/73573616653.pdfIn PDF document text
    • https://euinsuti.ro/app/webroot/files/userfiles/files/46429609100.pdfIn PDF document text
    • http://rentator.com/uploades/fckeditorfile/kisodimulidogubij.pdfIn PDF document text
    • https://salvamontbihor.ro/app/webroot/files/userfiles/files/soxonelem.pdfIn PDF document text
    • http://ohmytour.kr/FileData/ckfinder/files/20210812_78B57CFC31EA5CD0.pdfIn PDF document text
    • http://matemotors.com/userfiles/file/63278909259.pdfIn PDF document text
    • http://brilspa.ro/userfiles/file///retuvakekizi.pdfIn PDF document text
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/83113166947.pdfIn PDF document text
    • http://fecoil.com/userfiles/file/25779618865.pdfIn PDF document text
    • http://porpora.group/imagenes/imagenes_contenidos///pudizuvagibov.pdfIn PDF document text
    • https://unicon-msk.ru/data/files/98150438287.pdfIn PDF document text
    • https://harmony-lazienka.pl/Upload/file/52898200127.pdfIn PDF document text
    • https://aluminiosarla.com/userfiles_arla/files/68894277816.pdfIn PDF document text
    • https://cabsfromheathrow.com/userfiles/file/pupatan.pdfIn PDF document text
    • https://cytokin.ca/upload/editor/file/35579545804.pdfIn PDF document text
    • https://china-glass-mosaic.com/userfiles/files/20210909_223627.pdfIn PDF document text
    • http://vitalchurchesinstitute.com/files/file/48566957274.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 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_off00058816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58816 18240 bytes
SHA-256: 04222517ba106b3479edda1f10bf1cfa8d336588005a174f9edd8954502796db
font_01_sfnt_off0005b80c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B80C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005cf2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF2C 11228 bytes
SHA-256: dc8fea4ecd927e7c010f43f05a4ecb859e3635711fa82f5076ef839839b1ab75