Malicious PDF — malware analysis report

Static analysis result for SHA-256 018fb71e791b3f88…

MALICIOUS

PDF

263.7 KB Created: 2022-03-17 03:57:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-08
MD5: 3b851104d72a2ed95de7a5266175ee6e SHA-1: b5f2fa08bb05e0f09b0aa5b3c3dd26a1cdcda78d SHA-256: 018fb71e791b3f88e3cdd5164f6b2965f9a363ae352fe89ed1747d5f4f2d23a4
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6946

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://norin.co.za/XSRYdR1H?utm_term=book+report+graphic+organizer+middle+school PDF link annotation
    • http://vandofigueiredo.com/userfiles/file///66538974008.pdfIn PDF document text
    • https://gtpoznan.pl/cms/files/file/towifavagolifajiritef.pdfIn PDF document text
    • http://vlaevski.com/admin/kcfinder/upload/files/gisilusara.pdfIn PDF document text
    • https://talaa-obour.com/webmisr/uploadwebmisr/file/48267816506.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/162039385f18d3---sipuxogimewo.pdfIn PDF document text
    • http://dotbamboo.com/file_media/file_image/file/15043723126.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/162316d6540df3---14451492844.pdfIn PDF document text
    • http://piazzademarini3ge.com/userfiles/files/nedap.pdfIn PDF document text
    • https://voskovefiguriny.eu/kcfinder/upload/files/xifoviduzejonexobofa.pdfIn PDF document text
    • http://nitexprofi.cz/userfiles/file/82611057302.pdfIn PDF document text
    • http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/bekatiwinamufuxowewu.pdfIn PDF document text
    • http://stavebni-firma.sarmo.cz/Images/file/fuzuluz.pdfIn PDF document text
    • https://eyescare.vn/app/webroot/upload/ckfinder/files/35589390421.pdfIn PDF document text
    • https://chetanaus.org/bheru/uploadfiles/file/nolonimukobumesa.pdfIn PDF document text
    • http://pieseclimaauto.com/files/file/xotuvuru.pdfIn PDF document text
    • http://profil-metall.de/content/uploads/file/lalaxe.pdfIn PDF document text
    • http://www.perchegouet.com/ckfinder/userfiles/files/61995139731.pdfIn PDF document text
    • http://podarox.ru/public/files/kuxete.pdfIn PDF document text
    • http://yeke.com.tr/public/kcfinder/upload/files/pimagisaxakunox.pdfIn PDF document text
    • http://www.naturhalles.fr/fckeditor/userfiles/file/xafamabekisot.pdfIn PDF document text
    • http://www.teeintact.com/admin/fckeditor/editor/filemanager/connectors/php/img/file/tuvifodagi.pdfIn PDF document text
    • https://agronlogistics.com/userfiles/files/23412055095.pdfIn PDF document text
    • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/denumuxiluf.pdfIn PDF document text
    • http://na-bytecek.cz/UserFiles/File/borupaxem.pdfIn PDF document text
    • http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/0da271d2adcfb73f8157fe9f40a8484e/83198735132.pdfIn PDF document text
    • http://danies.ru/ckfinder/userfiles/files/47980715186.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/162197b5c37c94---jatimuxavaxid.pdfIn PDF document text
    • http://blueleaves.ru/userfiles/file/13346719614.pdfIn PDF document text
    • http://martonfogtechnika.hu/admin/kcfinder/upload/files/zizazozakefuvojamikomaxu.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 extracted file (font_00_sfnt_off0003a8ef.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003a8ef.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003a8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A8EF 11168 bytes
SHA-256: b2aa043cbb4e4ebd641c7cf2e617ca9ce0b03e0fc8caf3d92d8d6d11131a3723
font_01_sfnt_off0003c2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C2B6 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003d9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D9D1 20020 bytes
SHA-256: 3d4759c9607e30c2333f95b998812d37220b230881d722b122485d1559016308