Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b3ea5b16c11b63…

MALICIOUS

PDF

281.4 KB Created: 2022-03-01 08:52:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-03
MD5: 4e0467cad5b751de7f6e180ea8465d73 SHA-1: a6d87312c9beb0103bf974d5dac64afc01a990c8 SHA-256: 22b3ea5b16c11b63ef1e6a774f68c211ab61a119c83c1be773f72679579980a7
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript and a high-priority heuristic indicating it's a phishing lure using an 'ofsted school inspection reports' theme. The embedded link redirects to a suspicious URL, suggesting an attempt to download a second-stage payload or conduct phishing. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7171

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.
  • 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=ofsted+school+inspection+reports+2018 PDF link annotation
    • http://manuale.aziendasulweb.it/userfiles/files/6317674972.pdfIn PDF document text
    • https://whitelancer.com/sites/default/userfiles/file/90663449995.pdfIn PDF document text
    • http://vinhomeshaiphong.net/app/webroot/img/files/jafom.pdfIn PDF document text
    • https://ppuhperspektywa.pl/files/edytor/file/guket.pdfIn PDF document text
    • http://tydafa.com/dafa/uploadfiles/20220228060542.pdfIn PDF document text
    • http://townofwinslowin.com/flash/townofwinslowin.com/file/mepurijidemawijokemilas.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2022021509163419.pdfIn PDF document text
    • http://styropapex.pl/userfiles/file/15057128526.pdfIn PDF document text
    • http://1472bond.com/upload/Fckeditor/file/penimeramifokosulerurot.pdfIn PDF document text
    • https://classement-rangement-dossiers-documents.fr/app/webroot/kcfinder/files/67343016675.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/161f8d2efc038f---27226816698.pdfIn PDF document text
    • http://x04ydivan.ru/userfiles/file/22837784225.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/162183b310c8a3---gewuge.pdfIn PDF document text
    • http://divorce-difficile.fr/userfiles/file/mafowalik.pdfIn PDF document text
    • https://www.caposalasicilia.com/admin/ckeditor/kcfinder/upload/files/mibarufumevibopedo.pdfIn PDF document text
    • http://metall-press.ru/files/94059674358.pdfIn PDF document text
    • http://mbnlpc.com/assets/admin/ckeditor/kcfinder/upload/files/38202697928.pdfIn PDF document text
    • http://sieuthihatgiong.vn/webroot/img/files/84036569738.pdfIn PDF document text
    • https://kalafiber.com/webroot/js/ckfinder/userfiles/files/bojusopujufalajuni.pdfIn PDF document text
    • http://paulkainth.com/sites/all/sites/paulkainth.com/files/88326635755.pdfIn PDF document text
    • http://managhantasala.net/mailuserfiles/file/kevodagutupipojakifuvupuj.pdfIn PDF document text
    • http://websteravelandscaping.com/editorData/file/genesatolodulemolemedo.pdfIn PDF document text
    • http://bandotrading.it/uploads/file/1748264290.pdfIn PDF document text
    • http://chipmax.in/chipmax/ckfinder/userfiles/files/3567997633.pdfIn PDF document text
    • https://ydyb.com/filespath/files/20220301115845.pdfIn PDF document text
    • https://alariel.be/userfiles/file/luzefewofis.pdfIn PDF document text
    • http://due.pt/js/ckfinder/userfiles/files/wiborene.pdfIn PDF document text
    • http://my-glc.com/uploads/file/44957184085.pdfIn PDF document text
    • https://liguecasa.mmsfoot.com/stock/file/bepozasi.pdfIn PDF document text
    • https://sealskinz.ru/files/file/zubetezefupo.pdfIn PDF document text
    • http://mastera-mix.ru/ckfinder/userfiles/files/86730840639.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/150655980.pdfIn PDF document text
    • https://thermocalnepal.ramjanki.com/ckeditor/kcfinder/upload/files/rebogibuvubijeguzoxem.pdfIn PDF document text
    • http://redigonda.it/userfiles/files/lorudojerigopamuranow.pdfIn PDF document text
    • http://safiorida.dk/operatori/userfiles/file/44867737992.pdfIn PDF document text
    • http://www.barczyk.plwww.sgpm.krakow.pl/aanewsysn/kcfinder/upload/files/kirunazajekores.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_off0003f63e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F63E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00040d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40D5E 11084 bytes
SHA-256: c1667c8635a26fcf85aee9e80bc3ecf561bfff4bebeda1dd5341b8860949c2cd
font_02_sfnt_off0004271e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4271E 17388 bytes
SHA-256: 0a06c2b4613d64a58a9111919b7d309dfd6f131efb29858358d507fb072948da