Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f57494f4965d0e…

MALICIOUS

PDF

300.8 KB Created: 2022-02-26 04:04:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 6c11eaab6429df2ce5d76415376beb38 SHA-1: 07730e38739db584596c0ee0d649a302ad52bd9d SHA-256: a4f57494f4965d0e49aa69111e4b3b27c758653037bf55f9fca06e38ed161667
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6973

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://podar.co.za/XSRYdR1H?utm_term=concentration+game+online+template PDF link annotation
    • https://ecodiagnost.com/ckfinder/userfiles/files/34717077796.pdfIn PDF document text
    • https://etadelloro.it/images/file/zidejogejelo.pdfIn PDF document text
    • http://limeitec.com/upfiles/editor/files/reniroverif.pdfIn PDF document text
    • https://www.webursitet.ru/kcfinder/upload/files/13307022096.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/092ed6e3678630f36325959982d5e362/wunatibelo.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/1c4353c24542e0fe8443838a53ff3aed/52574730317.pdfIn PDF document text
    • https://www.potravinyav21.cz/ckfinder/userfiles/files/bimejuku.pdfIn PDF document text
    • http://hzqljsj.com/images/upload/File/rotuvota.pdfIn PDF document text
    • http://wordtmann.beckbauer.eu/ckfinder/userfiles/files/82228286910.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///nubolujazibiduledofa.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/sewoxafami.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e418a9c0ac8---17735269938.pdfIn PDF document text
    • http://lamexmarket.com/uploads/files/73179161962.pdfIn PDF document text
    • http://emcmotorbikerental.com/asset/kcfinder/upload/files/36306832430.pdfIn PDF document text
    • http://fructusartis.com/i/File/38131144689.pdfIn PDF document text
    • https://acconpriti.com/ckfinder/userfiles/files/fabogiwikilukifabirini.pdfIn PDF document text
    • https://tbsva.org/Upload/files/20220106010551.pdfIn PDF document text
    • https://e-motorcycle.tw/upload/emotorcycle/files/84445556162.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16139d2c7cd1b6---buzenum.pdfIn PDF document text
    • http://artdental.hu/editor_up/80427886855.pdfIn PDF document text
    • http://ipllaser.in/uploads/mifejejogade.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616a8f0e9b7f8---87120944969.pdfIn PDF document text
    • https://nhachoxebus.com/upload/fck/file/25305978780.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/pidoxif.pdfIn PDF document text
    • https://www.milestonesmn.org/ckfinder/userfiles/files/81500955021.pdfIn PDF document text
    • http://hytechcommunications.com/userfiles/file/48354569436.pdfIn PDF document text
    • http://hammaddedunyasi.com/panel/kcfinder/upload/files/porutipiparupa.pdfIn PDF document text
    • https://rowanmkt.com/Uploads/ckfinder/userfiles/files/vokivunedow.pdfIn PDF document text
    • http://apsencollege.org/test/fckeditor/file/zozukumurowu.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16102c0276abb8---85592000866.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160e0cbc4491e9---rowuvodukufatosefosoluxi.pdfIn PDF document text
    • http://studiophotosfashion.it/userfiles/files/62464575931.pdfIn PDF document text
    • http://consulcongress.it/uploads/assets/file/40801062527.pdfIn PDF document text
    • http://dpnovelty.com/upload/files/51255997795.pdfIn PDF document text
    • https://sarenpinler.com/calisma2/files/uploads/1597791960.pdfIn PDF document text
    • http://vinhthuan.asia/upload/files/laneduloforafolaz.pdfIn PDF document text
    • https://kurtoglumob.com/upload/file/bikimodowofutawifus.pdfIn PDF document text
    • https://rajatotogroup4.com/contents//files/xubunimebon.pdfIn PDF document text
    • https://tarsiman.ee/files/file/63844121233.pdfIn PDF document text
    • http://yaolankungfu.com/kcfinder/upload/files/91689523364.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_off00043dd8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00043dd8.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00043dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43DD8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000454f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x454F3 20108 bytes
SHA-256: fdd73bfd044aa15964ec5e584633fb7e79d2e93fc185a8c761fb6dbf28dae07f
font_02_sfnt_off000489f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x489F0 10580 bytes
SHA-256: d61a3600cbd59210e7ca69dbe4bff371ca231abf509a278e4f9fcdbd357fc49d