Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6181a073822471c…

MALICIOUS

PDF

391.0 KB Created: 2022-01-27 05:37:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 166fc9509f0fca7cf92961c4461a8091 SHA-1: ba135e4c047c79529b0d3340f539a302e530dabc SHA-256: b6181a073822471ceba68dacf295416415bc4b061878c9dad159ace997aa785e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7525

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://sunuf.co.za/XSRYdR1H?utm_term=sika+backer+rod+data+sheet PDF link annotation
    • http://venusland.vn/app/webroot/img/files/patujabavilelavolida.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161e5e7f3eae9f---ruxakerigemarakek.pdfIn PDF document text
    • http://rockhousemethod.com/ckfinder/userfiles/files/gabafavalofisuvilunalin.pdfIn PDF document text
    • https://angkorphotographyguide.com/userfiles/file/xapevejawozunobowipowe.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/f233cd336f3ee69475bcc6d9f6271663/1783869436.pdfIn PDF document text
    • http://pokrowce-ochronne.pl/Upload/file/95709922244.pdfIn PDF document text
    • http://goldia.cz/data/file/13606528904.pdfIn PDF document text
    • http://www.evisiontiendaonline.com/ckfinder/userfiles/files/85574854635.pdfIn PDF document text
    • https://kentacademymiango.com/userfiles/file/logemijixipavidi.pdfIn PDF document text
    • http://haiannweb.com/uploads/files/rudokogenapugitawabotak.pdfIn PDF document text
    • http://videlec.be/ressource/file/kajefukunexofijokusuw.pdfIn PDF document text
    • https://holyfamilyhospitals.com/ckfinder/userfiles/files/14422082993.pdfIn PDF document text
    • http://sablinproperties.com.bd/public/admin/assets/ckeditor/kcfinder/upload/files/govodesovosidofotipo.pdfIn PDF document text
    • http://xn--jt2b56wn0ap2a.com/upload/file/202112270150143496.pdfIn PDF document text
    • http://ain.proximeo.com/ckfinder/userfiles/files/rokuvab.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614bad0a9e294---fomegusikobakadazavedog.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///202111150573277.pdfIn PDF document text
    • http://benthanhsgfarm.net/images/uploads/files/55735304756.pdfIn PDF document text
    • http://theemasternetworker.com/ckfinder/userfiles/files/74084943201.pdfIn PDF document text
    • http://members.lurnteam.com/js/kcfinder/upload/files/28895167257.pdfIn PDF document text
    • http://www.deopendeur.org/imgUser/file/99942402384.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d285d5dbf9b---wetokagopibaro.pdfIn PDF document text
    • http://arbigaz.com.tr/panel/kcfinder/upload/files/zerogejus.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_off0005b22a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b22a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B22A 16956 bytes
SHA-256: d2a532c272b41dbe0a743de84c8143a808b8e056525a7a7e85871769e1ed0a66
font_01_sfnt_off0005de05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE05 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0005f4a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4A9 10624 bytes
SHA-256: 02675cfffb35308c3dd46a4c4239d935e1aeab99bc5c1bfffb2b10df6b09ef40