Malicious PDF — malware analysis report

Static analysis result for SHA-256 6241b895ac003b58…

MALICIOUS

PDF

379.3 KB Created: 2022-03-03 17:30:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: c504cfc6515a15d1a8a260134e2abb8b SHA-1: 9156d082fd2f03f47df983b871326cc12e2f9b32 SHA-256: 6241b895ac003b584367860f498cb0d711a53e61079a59a6758b600ccded1e2d
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6606

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=weekly+kitchen+cleaning+schedule+template PDF link annotation
    • https://zlataraburmevuckovic.com/files/zuneledumu.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/20794391247.pdfIn PDF document text
    • http://ylpcl.com/ckfinder/userfiles/files/44804191979.pdfIn PDF document text
    • https://midlanddevelopers.com/backend/web/kcfinder/upload/files/taropoxubinupa.pdfIn PDF document text
    • http://fotofolliasanlazzaro.it/userfiles/files/duremixefobogukimesusi.pdfIn PDF document text
    • http://www.jatekkalmesevel.hu/admin/ckeditor/kcfinder/upload/files/47421178491.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/7f5hgck47k4iomd1utte28no5m/gabofagorexori.pdfIn PDF document text
    • http://usmp.pnl.ac.id/asset/kcfinder/upload/files/18248734542.pdfIn PDF document text
    • http://armanetti.com/images/mewoj.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16201d4700ec8f---zazujejupanekimuware.pdfIn PDF document text
    • http://okinawa-touch.com/app/webroot/js/kcfinder/upload/files/doranuv.pdfIn PDF document text
    • http://elmasryeverline.net/public/kcfinder/upload/files/84701696193.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/162066475b4d3d---12071624245.pdfIn PDF document text
    • http://kezheng.net/Upload/file/sedusafezufiro.pdfIn PDF document text
    • https://kangaroovietuc.vn/webroot/img/files/9017041017.pdfIn PDF document text
    • https://sagarexpress.com/userfiles/file/faruvinoped.pdfIn PDF document text
    • http://eurogalvano.com/admin/kcfinder/upload/files/mumeban.pdfIn PDF document text
    • http://imssp.by/data/images/fxeditor/file/runuxerumifawode.pdfIn PDF document text
    • http://bkht.vn/userfiles/file/lujipaxojesavuzefopogaler.pdfIn PDF document text
    • https://www.servicespace.org/inc/ckfinder/userfiles/files/85158422835.pdfIn PDF document text
    • http://serviskytar.cz/kcfinder/upload/files/13811259908.pdfIn PDF document text
    • http://all-premium.com/user_file/files/68041440082.pdfIn PDF document text
    • http://medcentervrn.ru/userfiles/files/rotewobamusa.pdfIn PDF document text
    • https://residencialconilcosta.es/kcfinder/upload/images/files/nijelajowa.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 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_off00057bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57BF2 11040 bytes
SHA-256: f15a31c9ade8a63bb3854304068a4bdbed5dc84594ba687c11273bfefa923914
font_01_sfnt_off00059547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59547 18828 bytes
SHA-256: 691b3dba448157446793505206992c85beb7d9b6ca5113610c4f6c4b07949bc8
font_02_sfnt_off0005c6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6E7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9