Malicious PDF — malware analysis report

Static analysis result for SHA-256 5528cdcee146d4b8…

MALICIOUS

PDF

706.7 KB Created: 2022-03-09 15:50:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: dc6d57977e8b5295e5355f6135081a58 SHA-1: 7c433ef3df4a09a4f57ef952ce15ddc7d6d32198 SHA-256: 5528cdcee146d4b8fc06406b760299603334656f014051d40fe12da0ff0b6711
144 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.2032

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.
  • Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT
    Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
  • 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 http://nfc-lampang.com/user_img/files/vozafulodadilokijapal.pdf In PDF document text
    • http://www.albertoabajolimousin.com/abm/Bibliotecas/kcfinder/upload/files/juserexokakifisok.pdfIn PDF document text
    • http://thelonerangerfanclub.com/ckfinder/userfiles/files/73435270506.pdfIn PDF document text
    • http://ieclop.pnl.ac.id/asset/kcfinder/upload/files/xapozixivezira.pdfIn PDF document text
    • http://potolokomsk.ru/ckeditor/kcfinder/upload/files/wagafi.pdfIn PDF document text
    • http://delfosventures.com/userfiles/files/90236494898.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/a33007efd98eec93c05cee354bff8492/torujixadot.pdfIn PDF document text
    • http://masaze-bohunice.cz/images/texts/file/megujinagepeliganixin.pdfIn PDF document text
    • http://sh-ruiyangcpa.com/userfiles/file/2022-3///202236113412433.pdfIn PDF document text
    • https://manuscripthandler.com/userfiles/file/poxijo.pdfIn PDF document text
    • https://p-yanagase.gorakuou.net/blog/upimg/81953199310.pdfIn PDF document text
    • http://andezit-bg.com/files/90888293407.pdfIn PDF document text
    • https://centralnanaimo.gocascadia.com/images/cms/file/61973153931.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1622896efe9422---81391342476.pdfIn PDF document text
    • http://www.fbs-g.com/kcfinder/upload/files/27905112197.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/b46ffac064f4d27c6994f5f359ef78f1/57864953359.pdfIn PDF document text
    • http://hueide.com/upload/files/xowadizapibubirog.pdfIn PDF document text
    • http://winterwonderlandzundert.nl/uploadimages/files/85785849583.pdfIn PDF document text
    • http://architettosirocco.it/userfiles/files/mukuk.pdfIn PDF document text
    • https://www.fukuyama-ramen.com/editors/kcfinder/upload/files/73848031394.pdfIn PDF document text
    • http://vagyonvedelemszolnok.hu/admin/fck_upload/file/rutusebudamilorojeti.pdfIn PDF document text
    • https://agriplan-rs.com/dados/ckfinder/files/9798577814.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/162042e29800c3---12307023880.pdfIn PDF document text
    • https://alibaba-cave.com/userfiles/file/72545703783.pdfIn PDF document text
    • http://forcedainik.com/dbros/public/ckeditor/kcfinder/upload/files/munoj.pdfIn PDF document text
    • http://ecosdaliberdade.com/ckfinder/userfiles/files/kagoga.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1621c91ec4469e---8463518465.pdfIn PDF document text
    • http://gewald.ru/content/Files/wexenowapozigorodaso.pdfIn PDF document text
    • https://www.cuadernosmanchegos.com/panel/cuadrodemandos/assets/ckeditor/kcfinder/upload/files/93264204240.pdfIn PDF document text
    • http://smarttechsolutionukltd.com/uploaded_files/userfiles/files/dusiwusorogoj.pdfIn PDF document text
    • http://linyuepharm.com/upload/files/bigavukabotusododukitu.pdfIn PDF document text
    • http://professionalcsali.hu/admin/ckeditor/kcfinder/upload/files/zarotogivul.pdfIn PDF document text
    • http://analhospital.net/file/files/63374667559.pdfIn PDF document text
    • https://www.yamanosake.com/js/kcfinder/upload/files/dawatudexunabere.pdfIn PDF document text
    • http://sun-tes.ru/files/file/64029380254.pdfIn PDF document text
    • http://ww2.forte.com.pl/js/ckeditor/kcfinder/uploads/files/71410128873.pdfIn PDF document text
    • http://obkladlazby.cz/userfiles/file/gididogivuvanopukofetok.pdfIn PDF document text
    • http://maasmartcity.com/userfiles/file/99211997643.pdfIn PDF document text
    • http://xn--90aoa5aj.xn--p1ai/ckfinder/userfiles/files/degobikokatarigixag.pdfIn PDF document text
    • http://sinkrontech.hu/admin/kcfinder/upload/files/65996789456.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/wivozamokawufuvunabagi.pdfIn PDF document text
    • http://www.look4job.gr/images/_user_na/file/tebamukunajewilupupesu.pdfIn PDF document text
    • http://jrecchina.com/ckeditor/ckfinder/userfiles/files/84273169821.pdfIn PDF document text
    • https://tevav.co.za/XSRYdR1H?utm_term=oscar+awards+2018+winners+list+pdfPDF 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
    +2 more URL(s)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000a7dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DD1 16220 bytes
SHA-256: 207eb3b51995adbdef2a766e0364e2c2ee182a7f0f0647c12a4a3807efc046f6
font_01_sfnt_off000a93b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA93B1 20228 bytes
SHA-256: 9dbe7d3a293817a489697375f184ee8d3f40effed3df7570e45f8b0f8995dd8a
font_02_sfnt_off000ac824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC824 11108 bytes
SHA-256: fb6a5d176f7723caa57b4d9cb775f20a7f97f4726da6a3c0d3634441b6985791
font_03_sfnt_off000ae260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE260 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9