Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3a51d8bcc06813…

MALICIOUS

PDF

276.5 KB Created: 2022-02-08 16:58:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: f56c611b45924c1ba4f745fd10d8b099 SHA-1: 13d07d06acdd5375dfa96e13b5c160a94a2f04d5 SHA-256: 4e3a51d8bcc068137dc3a34e183ed813e5f3f57df4dc0157b8e80338048f0c6a
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://wirut.co.za/XSRYdR1H?utm_term=coupon+template+html+css PDF link annotation
    • http://hypotekaprezamestnancov.sk/res/file/7567613093.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/velubipokupemofuwinus.pdfIn PDF document text
    • http://courirpassion.fr/js/kcfinder/upload/files/64913007443.pdfIn PDF document text
    • http://modulobase.com/userfiles/file/lewikekeloko.pdfIn PDF document text
    • https://selispin.com/calisma2/files/uploads/kuguwovogivibakuv.pdfIn PDF document text
    • http://appinaris.net/ckfinder/userfiles/publics/files/munutabo.pdfIn PDF document text
    • https://drrajanmahtani.com/userfiles/files/50669251828.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/b92a19073883e272530710ddd12005e9/40733759539.pdfIn PDF document text
    • http://njxinbell.com/upload/files/18411189506.pdfIn PDF document text
    • http://orel-trinity.ru/sites/default/files/file/bujatirefugavedop.pdfIn PDF document text
    • https://friendsofmultisport.com/ckfinder/userfiles/files/48028045545.pdfIn PDF document text
    • http://teen.plovdivweek.com/js/ckfinder/userfiles/files/tugen.pdfIn PDF document text
    • http://inarchengineering.it/userfiles/files/23798471675.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/5481351957a9eee10cc4a5d958b4f579/fixizuvudemik.pdfIn PDF document text
    • https://www.institutoitagui.gov.co/kcfinder/upload/files/REQUISITOS_PARA_OBTENER_RECONOCIMIENTO_DEPORTIVO.pdfIn PDF document text
    • http://planetpower-thefilm.com/plugins/kcfinder/upload/files/62729909589.pdfIn PDF document text
    • http://sxhk365.com/uploads/file///jebenoxezazebatapi.pdfIn PDF document text
    • http://trunglamdecor.com/uploads/userfiles/file/79309711101.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/89e1587e99a33a982a1fb14a63e2d919/35439739266.pdfIn PDF document text
    • http://graczeonline.pl/userfiles/file/26412266608.pdfIn PDF document text
    • http://ledseoul.com/userData/board/file/52856348500.pdfIn PDF document text
    • https://vibanghanoi.com/uploads/files/58202078354.pdfIn PDF document text
    • https://foodsafebox.com/ckfinder/userfiles/files/zibel.pdfIn PDF document text
    • http://kor-ra.ru/UserFiles/file/68825184994.pdfIn PDF document text
    • http://salamino.pl/userfiles/file/54836449017.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/terilegemula.pdfIn PDF document text
    • https://resttour.com/images/userfiles/files/bajisadozivawufowivovanik.pdfIn PDF document text
    • http://www.heatandgas.com/EditorImages/file/funobewigoni.pdfIn PDF document text
    • http://teleinwestor.pl/userfiles/file/52079657966.pdfIn PDF document text
    • http://dyccpharma.com/upload/files/ruzaxusenijefugowe.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/779d01926ebbcb297b25da77bea008a6/55745882653.pdfIn PDF document text
    • http://szakkepzosiklos.hu/upload/file/ximejimol.pdfIn PDF document text
    • http://evola.it/userfiles/files/voxamefiwososuju.pdfIn PDF document text
    • http://sooclose.eu/upload/File/fexuvoku.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/161147e6f74cab---xitozepuvepe.pdfIn PDF document text
    • https://corbitoys.sk/userfiles/file/57080420797.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/41964071440.pdfIn PDF document text
    • https://ktmcollege.org/public_html/userfiles/file/3686309132.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_off0003e436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E436 10576 bytes
SHA-256: 5e94c1cbab57481691f2d10ded2ab347903408d7f5cf2674926fbda32a59bd71
font_01_sfnt_off0003fc37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FC37 17900 bytes
SHA-256: bd8832f678d5d724b4aad1310508977eb47044cdcc378da2b85525e4eea68b11
font_02_sfnt_off00042b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42B19 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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