Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1efdbecf6aa4ed…

MALICIOUS

PDF

279.2 KB Created: 2022-03-23 07:20:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-31
MD5: 3272943023f26beae15d1332c303d137 SHA-1: f842e7b3d8c68ea7d5acbb0ac7f4b95bb706ced3 SHA-256: 5a1efdbecf6aa4ed21286c37356902f576d37e8b85f51783f344a9e618862000
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6854

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fecuq.co.za/XSRYdR1H?utm_term=volumenes+de+solidos+de+revolucion+por+integracion+ejercicios+resueltos PDF link annotation
    • http://pflp-sy.org/assets/js/admin/ckeditor/kcfinder/upload/files/zenedizozoj.pdfIn PDF document text
    • http://ersenergy.com/UserFiles/file/jujifanemabijisa.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16230c2b0b3446---76871355467.pdfIn PDF document text
    • http://metafelix.it/userfiles/files/wupewutibaga.pdfIn PDF document text
    • http://sangtaoad.com/uploads/userfiles/file/piwex.pdfIn PDF document text
    • https://futurefacesmiami.com/uploads/file/fubif.pdfIn PDF document text
    • http://tnet.site/kcfinder/upload/files/28730858724.pdfIn PDF document text
    • http://aihyang.com/userfiles/file/36005890569.pdfIn PDF document text
    • http://kryotherapie.net/neu/userfiles/file/67378236759.pdfIn PDF document text
    • http://perchegouet.com/ckfinder/userfiles/files/60883459349.pdfIn PDF document text
    • https://www.fcefrance.com/kcfinder/upload/files/30217865736.pdfIn PDF document text
    • http://bsinteriordesigner.com/userfiles/files/10331591489.pdfIn PDF document text
    • http://motovelo-nmsk.ru/userfiles/file/50351420686.pdfIn PDF document text
    • https://fibaquitaine.fr/cebatrama/userfiles/files/dutumoromaz.pdfIn PDF document text
    • http://chatyzvule.cz/uploads/26309507995.pdfIn PDF document text
    • http://tse.net.in/assets/ckeditor/kcfinder/upload/files/4402421740.pdfIn PDF document text
    • https://www.aatae.pt/backoffice/assets/js/kcfinder/upload/files/76105484429.pdfIn PDF document text
    • https://bticino-rozetki.su/kcfinder/upload/files/sirotidezunovujatunozemux.pdfIn PDF document text
    • http://daiichigroup.net/uploads/news_file/jutuwumobawazowapukula.pdfIn PDF document text
    • http://davidhammerstein.org/ckfinder/userfiles/files/2583193542.pdfIn PDF document text
    • http://info56.ru/userfiles/file/kexotiza.pdfIn PDF document text
    • https://arerp.kr/data/file///pevoxuxegote.pdfIn PDF document text
    • https://altinone.cz/files/ckfiles/file/65700669709.pdfIn PDF document text
    • http://carneiro-sa.pnh.pt/js/ckfinder/userfiles/files/99150074643.pdfIn PDF document text
    • https://erdenetpost.mn/userfiles/files/7070504118.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/d593f5b82b6f445fd00314f3084d6110/punabunukatisurujomefi.pdfIn PDF document text
    • https://unecol.com/uploads/kcfinder/upload/files/99456266871.pdfIn PDF document text
    • http://www.ascondir.com.br/Gerenciador/kcfinder/upload/files/dutiposifek.pdfIn PDF document text
    • http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16235d68d78965---linowunobasokutepikasa.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16202fc3844fa8---2377800509.pdfIn PDF document text
    • http://sumtinathholidays.com/admin/uploadfiles/file/sodejorixulugijopo.pdfIn PDF document text
    • http://servis-hradec.cz/files/file/80012686192.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/dotinunowe.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/xaronazunabiturunifiku.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_off0003e335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E335 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0003fa50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FA50 20856 bytes
SHA-256: 3767a0b9976612775183dd5d9d78e4980b72d8b38ab8188047cb6e2b295027c0
font_02_sfnt_off00043039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43039 11124 bytes
SHA-256: 2e7a7a76593642e4a3b9b7417c8b5409965ea5445d96fe65ebf6d9a5bd508c7a