Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e3f57d11b51848…

MALICIOUS

PDF

244.6 KB Created: 2022-03-01 04:01:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-17
MD5: 65a48a4675741b2102418aa4b3f7082b SHA-1: 4005ecd0cdc30e579aba3aedc96a8e89be2daf65 SHA-256: b6e3f57d11b51848fe063a7f4cbc87a697519dacf14cb3b40dcf5b9cd62ada6b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6760

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://yoyep.co.za/XSRYdR1H?utm_term=captain+marvel+official+trailer+free PDF link annotation
    • https://burstallconrad.com/editor_files/file/57251659313.pdfIn PDF document text
    • http://groupunsur1.com/contents/files/ninuvogaso.pdfIn PDF document text
    • http://geraldinekilkelly.ie/22461565734.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/sazeguvasev.pdfIn PDF document text
    • https://toyotacri.com/userfiles/files/91925625609.pdfIn PDF document text
    • https://bedandbreakfastholten.nl/userfiles/file/vakefebudijog.pdfIn PDF document text
    • https://greenfins-thailand.org/uploads/file/pukev.pdfIn PDF document text
    • http://ariege.proximeo.com/ckfinder/userfiles/files/83153910652.pdfIn PDF document text
    • http://sdruzeniprojablonne.cz/userfiles/files/dafiranofupezijoteluji.pdfIn PDF document text
    • http://kondicionery-pushkino.ru/upload_picture/file/gasepepukij.pdfIn PDF document text
    • http://tetrafluoro.com/upload/files/xakotitivezonukofo.pdfIn PDF document text
    • http://zl369.net/userfiles/file/16704396852.pdfIn PDF document text
    • http://mytenniscoach.net/admin/ckeditor/kcfinder/upload/files/pilijixujugakuma.pdfIn PDF document text
    • http://shop-cartuning.com/userfiles/file/jigirefekeroguf.pdfIn PDF document text
    • https://lajhajjar.com/userfiles/file/jesagogapefosesixisovamor.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/d8p5kkavjk8qlt26jq8p1189tr/wozapuwoxigolinuzaj.pdfIn PDF document text
    • http://abrushfire.com/kcfinder/upload/files/80034236632.pdfIn PDF document text
    • https://hondaotohaiphong.vn/upload/files/tovenuxokisasowovi.pdfIn PDF document text
    • https://hokusui.co.jp/hsk/wp-content/plugins/ckeditor-for-wordpress/kcfinder/upload/files/rafaropefujiw.pdfIn PDF document text
    • https://qeyeoptical.com/ckeditor/ckfinder/userfiles/files/woraratofabimixefaxi.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/161fbba204f6de---zanifudemufiwapokasile.pdfIn PDF document text
    • http://strihaci.cz/userfiles/file/13358523687.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1620c4193d5385---nuxiwiw.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/pf9bmlhg2v7aso0p1jbqn7n3j2/joxatewu.pdfIn PDF document text
    • http://asirakademi.com/resimler/files/99100725846.pdfIn PDF document text
    • https://www.ajmetaldesign.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/7559056392.pdfIn PDF document text
    • http://vpecargo.com/userfiles/file/kabonobobatovirajugup.pdfIn PDF document text
    • https://fo-prefectures.com/pages/files/61545556777.pdfIn PDF document text
    • https://vg42.ru/public/templates/kcfinder/upload/files/dapuzufuge.pdfIn PDF document text
    • http://www.aippc.net/kcfinder/upload/files/rekizisopapanege.pdfIn PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/59931715016.pdfIn PDF document text
    • https://residencialconilcosta.es/kcfinder/upload/images/files/62932766909.pdfIn PDF document text
    • https://hse.tw/upload/file/95136358020.pdfIn PDF document text
    • http://proreferee.ru/uploads/ckfinder/files/45786633408.pdfIn PDF document text
    • https://lordoptika.hu/files/files/wizukinuxixekoxojenogido.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_off00036313.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00036313.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00036313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36313 18492 bytes
SHA-256: 2349ea2c5d16beeea259d6f83c96f724a1f428f111bc4e19f48430823fb95224
font_01_sfnt_off0003933d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3933D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003aa5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AA5D 10572 bytes
SHA-256: 45f6d18bada1379358cf0673cf305a8ff17db9c3b59708954c5f334b031d09ee