Malicious PDF — malware analysis report

Static analysis result for SHA-256 793a4b8157048c38…

MALICIOUS

PDF

345.4 KB Created: 2022-03-16 07:50:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 323f33312ff3bd5aafac304f5d546729 SHA-1: 5c7ed8d9124fa63944d688e1ecfd268a327b51cf SHA-256: 793a4b8157048c389eebcd542e8e0c456f5e347b8683dfb926dfe42e9b21ccc9
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7397

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
  • 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://wirut.co.za/XSRYdR1H?utm_term=your+song+notes+pdf PDF link annotation
    • http://bilmatbasim.com/userfiles/file/75506201802.pdfIn PDF document text
    • http://www.mkfilm.it/ckeditor/kcfinder/upload/files/67688263802.pdfIn PDF document text
    • https://sdhouse.info/ckfinder/userfiles/files/luzetezoj.pdfIn PDF document text
    • https://zenmobile.in/jaipriyart/uploads/files/4770472913.pdfIn PDF document text
    • https://jedzenie365.pl/ckfinder/userfiles/files/64409077496.pdfIn PDF document text
    • https://icaiaa21.scrs.in/kcfinder/upload/files/koleresugomizoruresudeg.pdfIn PDF document text
    • https://stoneappeal.in/FCKeditor/file/10926970578.pdfIn PDF document text
    • http://demignyfasol.com/kcfinder/upload/files/2682052637.pdfIn PDF document text
    • https://cgb-echafaudage.fr/upload/files/tamabubajazusobi.pdfIn PDF document text
    • https://cursosadistanciayonline.com/medios/files/6758981456.pdfIn PDF document text
    • http://sport-celebrity.com/app/webroot/kcfinder/upload/files/vuwokotujirimiweleman.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16202fbc614fef---17205526991.pdfIn PDF document text
    • http://petraifevronii.ru/ckfinder/userfiles/files/88531630106.pdfIn PDF document text
    • http://tavaszitura.eu/userfiles/files/12561787921.pdfIn PDF document text
    • https://trungtamchonggia.vn/kcfinder/upload/files/gigagetoterev.pdfIn PDF document text
    • http://tua-hatextiles.com/assets/ckeditor/kcfinder/upload/files/75089525256.pdfIn PDF document text
    • http://www.mgamk.ru/ckeditor/kcfinder/upload/files/tojaxemobesig.pdfIn PDF document text
    • http://audiohrestomatiya.ru/content/file/30720913203.pdfIn PDF document text
    • http://nousgarage.com/userfiles/file/pusitedujo.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/162096beaf2435---lupobefugedek.pdfIn PDF document text
    • https://biodent.ro/m4fm_files/m4news/ck-uploads-files/xexupagemilasuginujuni.pdfIn PDF document text
    • https://nulifeus.com/~nulife/userfiles/file/17355613857.pdfIn PDF document text
    • https://mimpiindah88.com/contents/files/30512433310.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/ee7d02c7a5ebb0fc319ad5f99bcaae06/5284677819.pdfIn PDF document text
    • http://ulleungroadtour.com/FileData/ckfinder/files/20220316_3625F9B2BB6C6376.pdfIn PDF document text
    • http://www.recko.ru/ckfinder/userfiles/files/4915918129.pdfIn PDF document text
    • https://leo.tw/upload/ckeditor/files/zegodogu.pdfIn PDF document text
    • http://colokit.thienlonggroup.com/Images_upload/files/16982337655.pdfIn PDF document text
    • http://thriftstorewebsites.com/flash/thriftstorewebsites.com/file/malujunofom.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/90202061069.pdfIn PDF document text
    • https://riolisboa.com/images/ul_files/file/Rmz1ZV4Ob9vu.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_off0004f2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F2F2 10456 bytes
SHA-256: 2a165ae6cd40f1e4afa3af42c8509dba457dde384fe9311483b16d62c2b5f21e
font_01_sfnt_off00050aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50AA0 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000521bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x521BB 19924 bytes
SHA-256: 285319f87c930828387cb6da5e5f1468ef75056e2ce9491f4c0ffcb5f5137b93