Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b743e58c6243af…

MALICIOUS

PDF

343.1 KB Created: 2022-02-21 23:28:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: b3cbc552f7bf8f955db52ffccec08c96 SHA-1: c34929f5800ba208a4411d657bebc81178cb2ab3 SHA-256: a8b743e58c6243af761b760eb8107bb85db998bea7317a450ce7da56c28c8be1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7397

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://yubit.co.za/XSRYdR1H?utm_term=plague+inc+black+death+guide PDF link annotation
    • https://mangonebike.com/uploads/file/14800125146.pdfIn PDF document text
    • http://sakulchaiplace.com/Uploads/file/994308059.pdfIn PDF document text
    • http://drigungkagyurinchenpalbarling.org/upload/userfiles/files/50152184684.pdfIn PDF document text
    • http://peak-experience-europe.com/images/blog/file/bikisusagabijezikijuxi.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/20159524432.pdfIn PDF document text
    • http://sakem.org/userfiles/files/kufoxikazodojigonezadopu.pdfIn PDF document text
    • http://nesemlak.com/test/images/uploads/files/vuwuxezower.pdfIn PDF document text
    • http://livilgirls.com/files/jojedij.pdfIn PDF document text
    • http://tara77.com/clients/46590/File/47295963837.pdfIn PDF document text
    • http://rosabaum.de/web/editor/files/gotilogabo.pdfIn PDF document text
    • http://dade666.com/userfiles/202201file/2022012317234570554.pdfIn PDF document text
    • https://espiber.misitioexpress.com/images/uploadedimages/file/kepivedaruvewar.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a078604ba27---tuvafevuburobup.pdfIn PDF document text
    • http://www.cerel.eu/images/wyswig_images/file/34196033079.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/gidovatamanagonoga.pdfIn PDF document text
    • http://sh-songshi.com/admin/upimg/file///22994701039.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/2d77qbka564co8qknriovu2jju/kaporuvomafebowupafiz.pdfIn PDF document text
    • https://yucekalipmakina.com/tsrm1/img/userfiles/file/71244395997.pdfIn PDF document text
    • https://wendi101.com/userfiles/file/wovubos.pdfIn PDF document text
    • https://granitnet.hu/editor_up/3623721353.pdfIn PDF document text
    • http://wixoon.hu/upload/file/70714093346.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161d71143d3274---zosubo.pdfIn PDF document text
    • http://maquetland.com/v2/images_articles2/files/vimekoxikuvidate.pdfIn PDF document text
    • http://me-dg.com/uploads/2021/12file/202112181546125102.pdfIn PDF document text
    • http://maurovalleferroarchitetto.eu/userfiles/files/42281475123.pdfIn PDF document text
    • https://dondepodemosir.com/userfiles/file/36640940258.pdfIn PDF document text
    • http://newtarrytowndeli.com/uploads/files/duridon.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///2022216231215962.pdfIn PDF document text
    • https://milorem-service.ru/userfiles/file/finozaperifobilomitiji.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_off0004edba.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004edba.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004edba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EDBA 10596 bytes
SHA-256: 05ad292caf42d6de3aeebfa66c7aa26fd3f0b63d66d26178c991a94dac74c283
font_01_sfnt_off000505a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x505A4 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00051cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51CBF 19120 bytes
SHA-256: d0b3da83ee1ba184668d761c605bce15667a82ab2781a8d66e5f3558f43b6b8c