Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddbfc55fbd38e88…

MALICIOUS

PDF

378.0 KB Created: 2022-02-08 05:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 73e530399a21fd0fe0e1d6b356fcc753 SHA-1: 6d6db2d10ed31aa699c29bd4e4f247c34db72a94 SHA-256: 3ddbfc55fbd38e888b708f65e384bf114e3f7db0eff50455ce83c456b01ee92c
182 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8080

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fecuq.co.za/XSRYdR1H?utm_term=excel+spreadsheet+for+personal+budget PDF link annotation
    • http://kartywspomnien.pl/uploads/assets/file/vetisun.pdfIn PDF document text
    • http://dyneco.kr/userData/board/file/3241121190.pdfIn PDF document text
    • http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/joderipomirezidunil.pdfIn PDF document text
    • http://interstyle.org/content/xuploadimages/file/39221489526.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/94ec02fdfb9e913dca975f30528cb0ee/11901186440.pdfIn PDF document text
    • http://velkoobchod-man.eu/ckfinder/userfiles/files/dojidud.pdfIn PDF document text
    • http://royalgroup.at/tmp/59767493654.pdfIn PDF document text
    • http://progfin.pl/userfiles/file/xubizefugu.pdfIn PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/gidosananabapetibilipiwi.pdfIn PDF document text
    • https://www.jornaloflorense.com.br/admin/ckeditor/kcfinder/upload/files/61715851466.pdfIn PDF document text
    • http://intproplaw.com/admin/uploads/file/18547667724.pdfIn PDF document text
    • https://acatay.daynexdemo.tk/upload/ckfinder/files/tudavujevud.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/vujegazajibobalu.pdfIn PDF document text
    • https://citronixdeflection.com/nbloom/fckuploads/file/40498945529.pdfIn PDF document text
    • http://epicridesnepal.com/files/63029482503.pdfIn PDF document text
    • http://mama.plovdivweek.com/js/ckfinder/userfiles/files/pexuma.pdfIn PDF document text
    • http://ifap.it/images/file/dorivije.pdfIn PDF document text
    • https://exlite.it/ckfinder/userfiles/files/77275228418.pdfIn PDF document text
    • https://samngaimarble.com/html_upload/file/siximasorelisewinatasalop.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/ul36vsn2ctn2kjinmc62bnk0a9/japamavunagazukilozezi.pdfIn PDF document text
    • http://avanti-kuhni.ru/upload/files/62121137278.pdfIn PDF document text
    • https://marblo.com/app/webroot/img/files/43758766810.pdfIn PDF document text
    • http://arqing.es/ckfinder/userfiles/files/luzalemomob.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/c1694b79a5b92498d877f78cfa1fd005/62974997650.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/6aksc22u53oc3auaqqmb7l5nks/47858560797.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_off00057ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57AB7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000591d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x591D2 17528 bytes
SHA-256: 564263daa18b44d1fd5427650fc199f9dfd595cc4092f64b07a89ac40cce3fbf
font_02_sfnt_off0005bfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFB0 11132 bytes
SHA-256: 952840b44580970c1b8a5b96c34bf0bfed8bcb9588202dbdd713cf5849457815