Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e39e051586c10df…

MALICIOUS

PDF

377.0 KB Created: 2022-02-06 12:21:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: ed3b0d8d0d3bef44bd637c3f8023b7d7 SHA-1: f510fab8933bb1e183e472b382f1e52871f49b98 SHA-256: 4e39e051586c10dfa40a60f26c18fbbad6fd7d29f50cfded03880b070e9787ec
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6485

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://yoyep.co.za/XSRYdR1H?utm_term=before+number+worksheet+1-+100 PDF link annotation
    • https://marthomaktrplrdiocese.org/ckfinder/userfiles/files/losoreruzagutegutepa.pdfIn PDF document text
    • https://laatuwhuisweerstralen.nl/upload/file/11124374855.pdfIn PDF document text
    • http://kiko168.com/UploadFile/file/20211019111604993.pdfIn PDF document text
    • http://fjzy18.com/image/uload/files/doxobiworo.pdfIn PDF document text
    • http://camwater.org/media/files/tokirobosakebigitozif.pdfIn PDF document text
    • https://kenjiintlhk.com/UploadFiles/file/20220114200653116.pdfIn PDF document text
    • http://matras-devison.ru/upload/file/mexirogetovozun.pdfIn PDF document text
    • http://dayuntang.com/assets/uploads/ckedit/files/20210808040252.pdfIn PDF document text
    • http://casaperugia.fr/userfiles/file/8043711344.pdfIn PDF document text
    • https://kimcert.net/E/file/belotuxoxobo.pdfIn PDF document text
    • http://gekon.net/userfiles/file/wubitulu.pdfIn PDF document text
    • https://arenerachicamocha.sinecsas.com/ckfinder/userfiles/files/98794567115.pdfIn PDF document text
    • http://thegioixedap.net/upload/files/fivujipexojadala.pdfIn PDF document text
    • https://atlas-consulting.ro/fckeditor/fisiere/file/39371725880.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1614d32492413c---87684381500.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/file/1628806541_1.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f61c612122---depolite.pdfIn PDF document text
    • http://decaiyun.com/upload/file/211028135027878168yj8lxrs9ohao.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/12399257475.pdfIn PDF document text
    • http://at2apigroup3.com/contents/files/5810343409.pdfIn PDF document text
    • http://syntra.pl/userfiles/file/romur.pdfIn PDF document text
    • https://promoform.coreform.it/uploads/file/jererokururinivuj.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b52f8c1275f---vagalekuvalewelesedotuje.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/jevuvuporopavase.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/49d719310d3f68ad97d105d0b3600471/3165909204.pdfIn PDF document text
    • http://recepti.plovdivweek.com/js/ckfinder/userfiles/files/13046254456.pdfIn PDF document text
    • http://caratow.nl/userfiles/file/97939624670.pdfIn PDF document text
    • https://actieaanbieding.com/upload/content/files/70039686687.pdfIn PDF document text
    • https://truckforceone.eu/upload/editor/file/20832778551.pdfIn PDF document text
    • http://www.yeosung21.or.kr/ckfinder/userfiles/files/1641170613.pdfIn PDF document text
    • https://cristalparkhotel.com.ve/ckfinder/userfiles/files/1546770482.pdfIn PDF document text
    • http://hy-concrete.ru/d/files/sulejopewobimod.pdfIn PDF document text
    • http://wych123.com/upload/files/21503814080.pdfIn PDF document text
    • http://starinviter.com/ckimagefiles/92687311956.pdfIn PDF document text
    • https://kecweleri.kendalkab.go.id/kcfinder/upload/files/wivofamew.pdfIn PDF document text
    • https://eternalbliss.net/file/babavigobadozulikolofu.pdfIn PDF document text
    • https://cornerstonelaw.eu/userfiles/file/kebipezawokazokewib.pdfIn PDF document text
    • https://er-cardiff.com/eurostyl/photos/file/14000922727.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/dea6f132ab5d0edb3d4c432d66c3e7fb/ronozatidafufitagumizupaz.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_off0005775a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5775A 10856 bytes
SHA-256: 955842fdddbe76a37b6e31861a477bebe2507cb15e1876431edf71b85ec37fc9
font_01_sfnt_off00059071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59071 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005a78c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A78C 16628 bytes
SHA-256: 403549d360ec5061d50e08d4f46e7d3f49f8f168a3c47e12f9d749ffa2477802