Malicious PDF — malware analysis report

Static analysis result for SHA-256 af23fa19463a1729…

MALICIOUS

PDF

420.5 KB Created: 2022-02-05 11:08:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 95bfa22a22b12cc9798e620a041300ca SHA-1: bcdeed57d17335b686b5138b98be9315d875d907 SHA-256: af23fa19463a1729311ce7a367875ee8912826485d202fc3fdc09e655bbb5da0
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4712

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=indian+constitution+book+in+kannada+pdf PDF link annotation
    • http://kaica.org.sa/ckeditor/kcfinder/upload/files/soludadezusipobar.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/ana47sobd56btt5d9fiptedbog/dipimeresumaligajifizad.pdfIn PDF document text
    • http://chromowane.com/userfiles/file/45129322813.pdfIn PDF document text
    • https://chmelo.hu/sites/default/files/file/5102671810.pdfIn PDF document text
    • http://hinoki-machine.com/upload/file/zokenagudawepuze.pdfIn PDF document text
    • https://lgrdad.org.bd/assets/ckeditor/kcfinder/upload/files/32264293586.pdfIn PDF document text
    • http://kosmonautika.ee/ckfinder/userfiles/files/duxelude.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/84181709356.pdfIn PDF document text
    • http://enslev-anlaegsservice.dk/userfiles/file/pemewowufota.pdfIn PDF document text
    • http://todaystravel.com.tn/kcfinder/upload/files/luzapevotupajidalis.pdfIn PDF document text
    • http://gemeinschaftshaus-grossmuss.de/demo/admin/editor/kcfinder/upload/files/79747904580.pdfIn PDF document text
    • http://lngpetro.com/userfiles/file/17707861038.pdfIn PDF document text
    • http://www.pvvc.cz/files/58746837764.pdfIn PDF document text
    • http://kxqcgs.com/filespath/files/20220130005424.pdfIn PDF document text
    • http://noithatdangcap.vn/app/webroot/uploads/files/gubirutena.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/27611974952.pdfIn PDF document text
    • https://alstar.uz/images/shared/file/kadupodulufatozepus.pdfIn PDF document text
    • http://buydecor.ru/uploads/files/30670730940.pdfIn PDF document text
    • http://agisma.ru/files/pages/files/11836258186.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160e3318446e31---vizafokodedapabiweg.pdfIn PDF document text
    • http://mauchlineware.com/html/chapelstreet/web/userfiles/files/52075463879.pdfIn PDF document text
    • https://viveironativodevicosa.com.br/ckfinder/userfiles/files/19753288333.pdfIn PDF document text
    • http://thekreativecompany.com/uploaded_files/userfiles/files/wudexejuwopomovunanotise.pdfIn PDF document text
    • https://itscebu.com/upload/file/20211120121126.pdfIn PDF document text
    • http://birkhoffhi.com/userfiles/files/vimuteto.pdfIn PDF document text
    • http://sutinlawkrabi.com/ckfinder/userfiles/files/98714572911.pdfIn PDF document text
    • https://nistd.in/userfiles/file/4201672326.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/dekopitixigorow.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16129d09821094---47663532129.pdfIn PDF document text
    • https://powerliteaac.com/userfiles/file/60322957583.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_off000626f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626F4 16996 bytes
SHA-256: 275261ce71d7262149b36aadbf880cd82b2c53c329d9f07ec7ffeb7ca148458d
font_01_sfnt_off000652f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652F0 10620 bytes
SHA-256: 4605ba38b5744bfc7fac4f978a618881ddea9be616acdf21090dc9e18b0dee70
font_02_sfnt_off00066b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B24 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9