Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd71def74157c789…

MALICIOUS

PDF

319.2 KB Created: 2022-03-21 12:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 13dd728ebd72ff4f3ac7ece3f285e90e SHA-1: 0cf50ee02d177af5a599e337e410c9dd68f2c191 SHA-256: cd71def74157c78914f3a5cbe5fd0e9e644bfc41f476c3d6741312971bf5aaa4
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6303

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://loheb.co.za/XSRYdR1H?utm_term=nba+2k11+psp+iso+highly+compressed PDF link annotation
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/a3d57b2bd42f6912e7e35ed89f84b1ea/42645554089.pdfIn PDF document text
    • http://022-web.cn/uploadfile/file/20220216192129305.pdfIn PDF document text
    • https://olterus.com/contents/files/10967421411.pdfIn PDF document text
    • http://www.e-glasso.pl/galeria/files/50242333056.pdfIn PDF document text
    • http://bulongvungtau.com/media/ftp/file/84852252668.pdfIn PDF document text
    • http://www.groupkms.com/ckeditor/kcfinder/images/files/82769173920.pdfIn PDF document text
    • https://tckontrola.zagi.hr/files/41393584859.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622beb833a46b---wetazisi.pdfIn PDF document text
    • https://afritransport.com/app/webroot/files/file/76268945157.pdfIn PDF document text
    • http://jingyitech.com/uploadfile/84425347230.pdfIn PDF document text
    • https://villagrancanaria.bookipro.com/js/libs/ckeditor/plugins/kcfinder/upload/files/54615481663.pdfIn PDF document text
    • https://www.misuhuko.com/assets/kcfinder/upload/files/29990222145.pdfIn PDF document text
    • https://www.kpglearningbox.com/assets/kcfinder/upload/files/giguwokijolexetiguki.pdfIn PDF document text
    • https://reha.bg/content/upload/file/fuxoxisit.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/23034117404.pdfIn PDF document text
    • https://p-yanagase.gorakuou.net/blog/upimg/zomex.pdfIn PDF document text
    • http://azco.friend-match.com/upload/files/todifiwujawi.pdfIn PDF document text
    • http://owop.challengersports.com/ckfinder/userfiles/files/33267126089.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/komebemolaloginifimuto.pdfIn PDF document text
    • http://coffeexclusive.com/kcfinder/upload/files/waretam.pdfIn PDF document text
    • http://pc-driver.ru/userfiles/files/ritogusimibevepoxibipefu.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/24534f8011777715d0547567906592d7/76863679956.pdfIn PDF document text
    • http://falconartistmanagement.com/ckfinder/userfiles/files/27066566477.pdfIn PDF document text
    • http://vinhthuanvietnam.com/upload/files/73489110378.pdfIn PDF document text
    • https://clove7.com/userfiles/file/93043828953.pdfIn PDF document text
    • http://xz-brand.com/ckfinder/userfiles/files/21303814630.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1620c68f4de35c---91562784637.pdfIn PDF document text
    • https://stmpallet.com/ckfinder/userfiles/files/xubomeditukesujafebipa.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621cfdc0267aa---42653262969.pdfIn PDF document text
    • http://ranc.hyncice.eu/userfiles/file/najexifimapizuroreg.pdfIn PDF document text
    • http://xn--90aoa5aj.xn--p1ai/ckfinder/userfiles/files/14298194570.pdfIn PDF document text
    • http://www.oftalmed.com.br/files/ckeditor_custom/kcfinder/upload/files/xexezatututotitexa.pdfIn PDF document text
    • http://hmconcretemixingplant.ru/d/files/bezemosesuzepegugufifoz.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe1ec6de84e---xebavarinofururotejawolub.pdfIn PDF document text
    • http://consorzio.artforjob.it/userfiles/file/povebuxi.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16205b6157ad9d---xuvusuwuvijowufutuviliwe.pdfIn PDF document text
    • http://kompletucetnictvi.cz/files/file/20732865821.pdfIn PDF document text
    • http://3wsystems.com/shipinc/userfiles/files/gufatexu.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_off00048a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48A97 11252 bytes
SHA-256: d381c8992f2d515e48d30de3ad8071dc0e84e622026cc173e1d97a7eff259956
font_01_sfnt_off0004a4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A4BB 18792 bytes
SHA-256: c8d94c37a7ecb291653bf531f0e2b2b4eeda298c20f9dff660bf2d32624d4dd0
font_02_sfnt_off0004d5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D5C8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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