Malicious PDF — malware analysis report

Static analysis result for SHA-256 af21a113c1afe74a…

MALICIOUS

PDF

268.3 KB Created: 2022-03-24 13:34:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 5334dee9e6651d81ad976bcc6499fcda SHA-1: 5a6a87189902b79aeb60325062005f7743e2f811 SHA-256: af21a113c1afe74a65bfb6b6fd40ce7b783e46a8ea2fea900791bcf025462260
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6316

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://podar.co.za/XSRYdR1H?utm_term=minecraft+silah+modu+1.7+10+indir PDF link annotation
    • http://secureyun.cn/uploadfile/file///2022020513344932.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1620c43e93698f---53186754716.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/c150f949a6a5ce5afdd86c22eb2cc14e/panenebir.pdfIn PDF document text
    • https://austarpharma.com/upload/files/puxudatebabujidujadekes.pdfIn PDF document text
    • https://codefon2.solar-napkollektor.hu/js/ckfinder/userfiles/files/99840246832.pdfIn PDF document text
    • https://haysalon.com/public_html/userfiles/file/vowaxofidozafanivopivo.pdfIn PDF document text
    • https://tamm.be/_files/file/kuwebugexunus.pdfIn PDF document text
    • https://hattoco.vn/images/ckeditor/files/mozajami.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/sibizel.pdfIn PDF document text
    • http://www.tamar.org.br/fotos_news/files/tijasob.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/45700488219.pdfIn PDF document text
    • https://portalkucharski.pl/app/webroot/media/files/63246564084.pdfIn PDF document text
    • http://urparitet.ru/admin/ckfinder/userfiles/files/35483411129.pdfIn PDF document text
    • https://www.edaas.com.tr/admin/kcfinder/upload/files/80898951062.pdfIn PDF document text
    • http://luberoff.com/userfiles/file/11458543322.pdfIn PDF document text
    • http://www.conepe.org.br/public/ckeditor/kcfinder/upload/files/46577133097.pdfIn PDF document text
    • https://novamakine.com/upload/ckfinder/files/tabulakolenigixifuzekodav.pdfIn PDF document text
    • https://actieaanbieding.com/upload/content/files/wajinifezeluvozikidesix.pdfIn PDF document text
    • http://el-master.ru/userfiles/file/lukafagamidefilumilim.pdfIn PDF document text
    • https://domainedulacstellan.com/admin/kcfinder/upload/files/59431487818.pdfIn PDF document text
    • http://teknis.it/userfiles/files/pesezoriwunazefemajo.pdfIn PDF document text
    • http://starma.pl/files/file/89270471031.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/51320595703.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/3ef4bfd54458372a3eef9e56f5f0f2ac/piwofapaxenomimaf.pdfIn PDF document text
    • https://nexusmediation.nl/files/zonalegujapixuseg.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620bf6eee29ba---tufimerutepileleliwogina.pdfIn PDF document text
    • https://un7un9b3rl1pa7-99.com/contents/files/sewiwutilovexukesazunup.pdfIn PDF document text
    • https://electroagro.es/pub/files/93085607406.pdfIn PDF document text
    • http://pzhjintai.com/upload/files/41236520572.pdfIn PDF document text
    • http://c2r.su/uploadfiles/file/2022022018290373499.pdfIn PDF document text
    • http://niktid.ru/userfiles/file/89824493957.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/64343189357.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/161faf1b1238da---pekezefijupebuguzudum.pdfIn PDF document text
    • https://dvg.asia/ckfinder/uploadfiles/files/sibowowumubadef.pdfIn PDF document text
    • https://mithaiwala.uk/dayafter/uploadimages/newsimages/file/40131153422.pdfIn PDF document text
    • http://mariopresto.pl/userfiles/file/kumuxusijalowevu.pdfIn PDF document text
    • http://operahazyborlovagok.hu/browser/files/95873813965.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_off0003bd75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BD75 11124 bytes
SHA-256: 30fa11961e336c0264f0d38ea98d5b206a291ac3c4b44b7353d3a3f3bfafc779
font_01_sfnt_off0003d74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D74F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003ee6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EE6A 19596 bytes
SHA-256: 7217597b6bbaee811f35e03f071f1bf9debf17dc4c0b1efd59b1aeaad60110cb

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