Malicious PDF — malware analysis report

Static analysis result for SHA-256 425b9e3836e439f2…

MALICIOUS

PDF

300.9 KB Created: 2021-12-14 20:25:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: f066ebbe872b5888612551dff5d3af27 SHA-1: c7f38152b746af72ebb4338570e8072118f54c07 SHA-256: 425b9e3836e439f2c1e1e931df90dcf82d0be82c286f5e75dd26e1e206806c1e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7334

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://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1619fbf807e04d---17924543710.pdf In PDF document text
    • http://wannawwannie.pl/userfiles/file/witebew.pdfIn PDF document text
    • https://burlingame.com/wysiwygfiles/file/1712018756.pdfIn PDF document text
    • https://computerzone.pk/file/fojirigixinugegetivuse.pdfIn PDF document text
    • http://tubemakingmachine.com/uploadfile/files/59049335135.pdfIn PDF document text
    • https://atlas-consulting.ro/fckeditor/fisiere/file/kemuxufikabafu.pdfIn PDF document text
    • http://xn--80aaab5bgii0ck.xn--p1ai/ckfinder/userfiles/files/jetigutoridizubov.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/742c52db8e878a878117f6d534118270/bejate.pdfIn PDF document text
    • https://fond.ru/userfiles/file/gupodufosekikul.pdfIn PDF document text
    • https://ajambary.com/userfiles/file/88317862307.pdfIn PDF document text
    • http://brukbet.com/user_images/file/kumemegidumazazinebub.pdfIn PDF document text
    • http://industrialsupplies.pk/userfiles/files/36449731035.pdfIn PDF document text
    • http://tokyoto.pl/UserFiles/file/49987461678.pdfIn PDF document text
    • http://h-st.nl/bestanden/files/rexetufanaxijerebo.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16170babf9837d---53663209706.pdfIn PDF document text
    • https://marikakozmetika.hu/editor_up/42953421590.pdfIn PDF document text
    • http://tscyw.net/userfiles/file/20211117162126_n60jzm.pdfIn PDF document text
    • http://leebyenghun.com/new/upload/board/files/gagufodipi.pdfIn PDF document text
    • https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/2555534137.pdfIn PDF document text
    • http://jujucuisine.com/userfiles/file/10521846357.pdfIn PDF document text
    • http://mayjack.com/upload/files/vupilovogadozelif.pdfIn PDF document text
    • https://armour-technoz-ca.otzol.net/ckfinder/userfiles/files/46940883180.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e7af62ecddc036d0c017463c538bb185/gutukinu.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/161aacad6a6f49---81221801854.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/HKUGBsJGI0E/uplcv?utm_term=how+to+use+flavorwave+turbo+ovenPDF 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
    • 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_off0004479a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4479A 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00045e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45E3E 10500 bytes
SHA-256: ace3e00e3ab38db627f9df3fb4f90f7808fde273b6480dd0d2cae5bf56d68570
font_02_sfnt_off00047657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47657 17756 bytes
SHA-256: 45b47768d3dd456cde8b9da7019328f52140c09067e6244c5705f618e8f21cf8