Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f057ac52e3bae7…

MALICIOUS

PDF

357.8 KB Created: 2022-02-18 09:25:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 3f0d93478f3b47ed797ff5046629dca0 SHA-1: 005c7a08f824c384202a8a32b7068bc9582abcd3 SHA-256: a4f057ac52e3bae748ad1a766fef8921db5a2de8a732ec9717aae2e3f302672c
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6817

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://norin.co.za/XSRYdR1H?utm_term=graveyard+keeper+beginner+guide PDF link annotation
    • https://pastijptoto.com/contents/files/gogatuzitogijufemupi.pdfIn PDF document text
    • https://kangaroovietuc.vn/webroot/img/files/rawufozajezujozabet.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/16865249263.pdfIn PDF document text
    • http://0965818789.com/CKEdit/upload/files/97103970692.pdfIn PDF document text
    • http://webbolt.fono.hu/data/editorfile/juxaneviponugubakus.pdfIn PDF document text
    • https://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/77653444560.pdfIn PDF document text
    • http://hotelalbicia.com/userfiles/file/23447254445.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/d3a05e378472e72103ab1c225cabc6fd/feniredefolexa.pdfIn PDF document text
    • http://audiohrestomatiya.ru/content/file/78624618337.pdfIn PDF document text
    • https://www.conepe.org.br/public/ckeditor/kcfinder/upload/files/49792881669.pdfIn PDF document text
    • http://honyi.tw/ckfinder/userfiles/file/watav.pdfIn PDF document text
    • https://stopserv.ru/files/file/jovatoter.pdfIn PDF document text
    • http://dominant.name/userfiles/file/xigorelizotez.pdfIn PDF document text
    • http://www.atccs3.it/atccs3/fckeditor/editor/ckfinder/userfiles/files/24947490586.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/1898a60eafc27e34fa27624f0903dd06/15362133285.pdfIn PDF document text
    • http://zigzagontwerp.nl/sites/default/files/file/42816212009.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/161bf4726ab28f---26318988318.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/7cu4jpjvqjs5cc82ed4te65n45/30658007.pdfIn PDF document text
    • http://attep.com/home/sandbox/domains/heekee.com.hk/public_html/ckfinder/userfiles/files/bopupe.pdfIn PDF document text
    • https://wecareu.net/ckfinder/userfiles/files/xomubuxotowi.pdfIn PDF document text
    • https://khambenhxahoi115.com/images/files/leroruwasazura.pdfIn PDF document text
    • https://cvconstructionsgoa.com/pharma/admin/userfiles/file/63919273988.pdfIn PDF document text
    • https://peiitw.com/Upload/ckeditor/files/84423370270.pdfIn PDF document text
    • http://groupeao.com/app/webroot/js/kcfinder/upload/files/13548166023.pdfIn PDF document text
    • http://arborspringsforestry.com/img/files/75371182055.pdfIn PDF document text
    • https://mk-promotions.com/ckfinder/userfiles/files/13191716335.pdfIn PDF document text
    • https://absoger.bmv-communication.fr/uploads/files/76145971999.pdfIn PDF document text
    • http://globalbando.com/DATA/upload/files/202109012257262856.pdfIn PDF document text
    • https://ylwlgwadmin.ylwl.cn/upload/files/xitaxuwixi.pdfIn PDF document text
    • http://studiotecnicodama.it/userfiles/files/63487895883.pdfIn PDF document text
    • http://myphammonly.com/luutru/files/49029098588.pdfIn PDF document text
    • http://gsemilia.it/userfiles/files/worudujewoduxasogiguvoda.pdfIn PDF document text
    • http://apmnir.ro/fckfiles/file/runop.pdfIn PDF document text
    • https://unitedfightalliance.jordanadams.com/ckfinder/userfiles/files/27493846788.pdfIn PDF document text
    • https://m-isc.com/userfiles/file/xiwarodesebedo.pdfIn PDF document text
    • http://tranhdaquydep.vn/upload/files/61340761184.pdfIn PDF document text
    • http://ctcinsulator.com/uploads/file/25961673771.pdfIn PDF document text
    • http://highlevel.pl/userfiles/file/48663254855.pdfIn PDF document text
    • http://przybyszewski.org/image/file/denejunilotoja.pdfIn PDF document text
    • https://brawlcall.jordanadams.com/ckfinder/userfiles/files/tokatutomofitezebu.pdfIn PDF document text
    • http://tplustech.com/images/ckeditor/files/xososekumagetixexamuj.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/af39b56b10b1c9d5d34d40bacfe7bc78/50401659724.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_off000526d5.bin)
    +1 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000526d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x526D5 10688 bytes
SHA-256: 04c537323d20b9f6e7d4a6e7a1cf0df9da7e9817b7efefb725e38582b4fbb759
font_01_sfnt_off00053eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53EFF 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005561a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5561A 18376 bytes
SHA-256: 49153987f4cb73b44b471c2bb0b53d20a1b43853b8e93973c8d2c7448d71c0ea