Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cb8c873f06018a…

MALICIOUS

PDF

155.9 KB Created: 2022-03-18 08:46:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-26
MD5: e6a26ba9a5956f903fb2484b9c35628c SHA-1: 93707e910d60deb3860c2573d9ad66317f22a666 SHA-256: a9cb8c873f06018a280802059ddd21b66b234fa57a6c06009ea69f4269cb3bda
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8330

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://yoyep.co.za/XSRYdR1H?utm_term=tee+shirt+design+template+illustrator PDF link annotation
    • http://kochi-east-rc.com/admin/kcfinder/upload/files/nejemasojorujavesi.pdfIn PDF document text
    • https://hitourkorea.com/FileData/ckfinder/files/20220210_1018254BBF13525D.pdfIn PDF document text
    • http://renovfab-menuiserie.com/userfiles/file/devonujeladenovosodivizo.pdfIn PDF document text
    • https://pmsp-me.com/userfiles/files/wirepugumatozisupujosajup.pdfIn PDF document text
    • http://sksound.com/userfiles/file/57231098404.pdfIn PDF document text
    • http://ks-klinika.ru/ckfinder/userfiles/files/fajutufigigobewewosi.pdfIn PDF document text
    • http://wordtmann.beckbauer.eu/ckfinder/userfiles/files/82228286910.pdfIn PDF document text
    • https://parisnordmedical.fr/docs/file/bifunopepapajuzi.pdfIn PDF document text
    • http://tsraccountants.nl/mailing/images/photo/file/dewobododuperid.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/633bb8a1fe2a06c7cb13922fab98980c/lebawej.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/162213d0a47413---zijelubapesolelan.pdfIn PDF document text
    • http://yildizteknikelektrik.net/resimler/files/9873056276.pdfIn PDF document text
    • http://oppedisanorobertosrl.com/userfiles/files/42124106742.pdfIn PDF document text
    • http://xn----7sbakif2a3azdub.xn--p1ai/admin/ckfinder/userfiles/files/tabifitog.pdfIn PDF document text
    • http://getwealthythisyear.com/ckfinder/userfiles/files/zunupafajuranozapereduke.pdfIn PDF document text
    • https://escritacontabilidade.net/fotos/news/file/30831979272.pdfIn PDF document text
    • https://sjamsul-hidajat.id/ck_uploads/uploads/files/7338113884.pdfIn PDF document text
    • http://seasonsblinds.com/uploads/ckfinder/userfiles/files/jotakewaguwokulofaweveta.pdfIn PDF document text
    • http://eurogalvano.com/admin/kcfinder/upload/files/jaladawapakax.pdfIn PDF document text
    • http://studiobaldizzone.com/userfiles/files/1438885194.pdfIn PDF document text
    • https://istihdamhaberleri.com/upload/ckfinder/files/lugafokopinorupokixa.pdfIn PDF document text
    • https://xn--80ab4bebq2d.xn--p1ai/upload/files/91878820679.pdfIn PDF document text
    • https://excellencetogether.com/img/files/file/7472344774.pdfIn PDF document text
    • http://adgroup.co/userfiles/file/pekolupa.pdfIn PDF document text
    • http://tetrafluoro.com/upload/files/tilipeguw.pdfIn PDF document text
    • http://niszczeniewaw.pl/userfiles/file/muvetobemumite.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/muvimunatuzilosugexum.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/06e8ec83586bc74ba2abddfd0cbca700/davojowuworobevekuken.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/jizusepex.pdfIn PDF document text
    • http://jiab.net/userData/board/file/59590360530.pdfIn PDF document text
    • http://hingliltd.com/userfiles/pizirugadoju.pdfIn PDF document text
    • https://eva.am/files/fb69d2dff52a7a3c.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/7ca341737dc19c2c7067045ea0380165/96989997053.pdfIn PDF document text
    • http://lavalnerina.it/userfiles/file/tisipebizozidujid.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_off0001fca4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001fca4.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001fca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FCA4 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000213bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x213BF 19616 bytes
SHA-256: c07e0446f39b9c308b9df0024d2a099557d3440d42ba44721acb26b37fcc73e9
font_02_sfnt_off00024782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24782 10904 bytes
SHA-256: f64f33b899e76b48879639adae244d71c0fee78591f6436fa8839e1823e603bc