Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8fc5374fde491c…

MALICIOUS

PDF

377.1 KB Created: 2022-03-16 09:46:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 866a4a0232e665a871d824ba3c94e720 SHA-1: 49b420807eff792da9c936df8add6f386e907b29 SHA-256: 2c8fc5374fde491c7ad089aa531964ad7c2499e7cd69385812144a43bee5cebf
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5194

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://cafij.co.za/XSRYdR1H?utm_term=calendar+2019+thailand+free PDF link annotation
    • http://www.binghan.my/userfiles/file/vodudifujuwezad.pdfIn PDF document text
    • http://veedik.com/assets/admin/kcfinder/upload/files/48857231343.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1622577bf9a9dc---52969854257.pdfIn PDF document text
    • https://anup.bo/images/files/82347492362.pdfIn PDF document text
    • https://mavieromantique.com/images/files/jalutajumawupipasox.pdfIn PDF document text
    • http://amtautotrasporti.com/ckeditor/kcfinder/upload/files/jatovupewonibutalavafixes.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620b22f9029c1---zebosakadunujovifovaxoj.pdfIn PDF document text
    • http://viorina-deko.com/images/file/tetuwirujogutexujixejimo.pdfIn PDF document text
    • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/katoxizeninaxoma.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16216d8875f68a---ruworibudititiv.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/e2af0553c1fed80e303a2d72fd8313f9/222118892.pdfIn PDF document text
    • https://vida.posilatko.cz/files/wswg/files/nebovi.pdfIn PDF document text
    • http://onelove.cz/file/wujowivuwapoduxodazifimu.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/5c55faf112a346a0fdbf87dda893bc06/77695600275.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/df5946852a0717317374ee9a43eb284e/musan.pdfIn PDF document text
    • http://contrast.no/ckfinder/userfiles/files/rubosajiwoderaxutuvisijar.pdfIn PDF document text
    • http://arniuniversity.in/ci/userfiles/files/kutunidavaxoxobogawuw.pdfIn PDF document text
    • http://trailerdepot.ca/site-uploads/41134215688.pdfIn PDF document text
    • https://tekstilkentrehber.com/upload/ckfinder/files/gavalatokewarureve.pdfIn PDF document text
    • http://td-mg.ru/uploads/files/xirez.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/lebetimefitodudoladasit.pdfIn PDF document text
    • http://muratdizayn.com/panel/kcfinder/upload/files/91925167614.pdfIn PDF document text
    • http://szboerzuo.com/upload/file/nobujikofirowul.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/162123923b2c84---kagipidoki.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/rezovosero.pdfIn PDF document text
    • https://wiercenie-studni24.pl/files/files/bogapujupi.pdfIn PDF document text
    • http://apsara.ru/userfiles/file/69154420133.pdfIn PDF document text
    • http://egyptfuture-eg.com/public/kcfinder/upload/files/62278117309.pdfIn PDF document text
    • http://serviskytar.cz/kcfinder/upload/files/febelefemoteruvisati.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/zuwatinarazuvamudepor.pdfIn PDF document text
    • http://dwornawodzie.pl/userfiles/file/nejofuxu.pdfIn PDF document text
    • https://x-leather.com/radsportfiles/file/86277175266.pdfIn PDF document text
    • http://cjmfgx.morefriendship.com/upload/files/17867756519.pdfIn PDF document text
    • http://sial.pl/galeria/file/jigizuxeravonivujegafu.pdfIn PDF document text
    • http://komputerzagrosze.pl/userfiles/file/xavotil.pdfIn PDF document text
    • http://theonejsc.com/userfiles/file/tudurokaxizevof.pdfIn PDF document text
    • http://studioingegneriavaragnolo.com/userfiles/files/92555408945.pdfIn PDF document text
    • http://funkyspa.net/ckfinder/userfiles/files/zujexepufomo.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/77b8c68b94cc4f5687fcba6b00df1520/21197938879.pdfIn PDF document text
    • http://brno-skoleniridicu.cz/ckfinder/userfiles/files/zimufukorejifololegizoku.pdfIn PDF document text
    • http://k-sta.kr/FileData/ckfinder/files/20220225_0D8881AE6C33CEB8.pdfIn PDF document text
    • https://readandenjoy.ae/userfiles/files/kelolemodalun.pdfIn PDF document text
    • http://entryexpress.online/chapter_images/files/zujarixanomatixapo.pdfIn PDF document text
    • http://djarkitek.com/temp/vinney/HTML/userfiles/file/tadufisazisivawume.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
    +3 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56961 22352 bytes
SHA-256: 8f92bf07cadc104b27cb4bf7b693376749f317cd26738d4533c0ed81c18ff003
font_01_sfnt_off0005a461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A461 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005bb83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB83 10656 bytes
SHA-256: eab4be569568fdd550d24b8f82ff2a92d370e9788454fbf16918cf2875fecf9e