Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b673af3f5e9e7e9…

MALICIOUS

PDF

392.5 KB Created: 2022-02-08 03:23:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 28127d448500f988b7ffdb3744520a9f SHA-1: effd418ceeca9def7de95d88d03b9779c025b8df SHA-256: 2b673af3f5e9e7e9108fb18dd348103badb28ac774d6f1df3f6a833fec0b2abf
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6300

Heuristics 8

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://yoyep.co.za/XSRYdR1H?utm_term=inference+worksheet+ks2 PDF link annotation
    • http://thekitchendesignstudio.org/uploads/files/25019696461.pdfIn PDF document text
    • http://regimhotelierbucuresti.com/images/userfiles/nukazijavegevixosaxeso.pdfIn PDF document text
    • http://chunmianxian.com/upfolder/e/files/20210708060421.pdfIn PDF document text
    • https://telechips.com/ckfinder/userfiles/files/10308903527.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/980011976.pdfIn PDF document text
    • http://americansemitruckparts.com/d/files/2034612045.pdfIn PDF document text
    • https://www.ajmetaldesign.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/nekixokugulujiwiwex.pdfIn PDF document text
    • http://autoskola-weiss.cz/userfiles/2221919065.pdfIn PDF document text
    • https://thieumaunao.vn/workspace/develop/uploads/ck_upload/files/74141154067.pdfIn PDF document text
    • http://greenld.com/userfiles/mepexazasofanujedinudo.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/62036579144.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/a8bcd198f4f545ae6008bcbfb789bd91/7437526869.pdfIn PDF document text
    • http://nut-shell.net/upload/files/7316062182.pdfIn PDF document text
    • https://mimpishiosatu.com/contents/files/70316176485.pdfIn PDF document text
    • http://hamyarsanatco.com/ckfinder/userfiles/files/nutoramuroruka.pdfIn PDF document text
    • https://monyetmesum.com/contents//files/dekonoxirixejow.pdfIn PDF document text
    • http://buffagiuseppeinfissi.com/userfiles/files/jenuvomovosixorupixo.pdfIn PDF document text
    • https://ratsimae.ee/media/contents/file/24501399947.pdfIn PDF document text
    • https://jdsliquorlocker.com/nbloom/fckuploads/file/28970666329.pdfIn PDF document text
    • https://escritacontabilidade.net/fotos/news/file/rivudojekijomukeri.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1618931bc391b1---todesezatedutomisev.pdfIn PDF document text
    • http://buyyoutubesubscribers.com/ci/userfiles/files/jomire.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a8f01c8354f---4990895607.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/161b3f9c769a22---jovazugefesavupiwalosinas.pdfIn PDF document text
    • http://thanhtamgia.com/ckeditor/kcfinder/upload/files/46649413678.pdfIn PDF document text
    • http://bioterapiazabiegi.pl/obrazy/file/jufekimisu.pdfIn PDF document text
    • http://ghibms.com/userfiles/files/gafusosiz.pdfIn PDF document text
    • http://strahyi.ru/images/file/75646574179.pdfIn PDF document text
    • http://ithaca1960.com/clients/8/87/874e400c25abfb160fd1c0cf9913fcd0/File/sufojisuxoketu.pdfIn PDF document text
    • http://185.33.116.142/~bbyacht01/upload/files/69408679336.pdfPDF link annotation
    • http://funkyspa.net/ckfinder/userfiles/files/37246300914.pdfIn PDF document text
    • http://officinedesign.it/userfiles/files/vegevijuwewuk.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_off0005b960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B960 16420 bytes
SHA-256: 8b0d521bbccc3efb4ae3a22bdc682c49033560e2e639f4acd579e0126b186b7a
font_01_sfnt_off0005e3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3EA 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005fb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB0A 10380 bytes
SHA-256: 1f1bae36b619760a22d9bf27e531d8c142f5b532534077a763f8b0187b2fcf26