Malicious PDF — malware analysis report

Static analysis result for SHA-256 25835da080fa444e…

MALICIOUS

PDF

394.5 KB Created: 2022-02-26 19:02:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 9e669698dd65c6d5a75b64b89a5589c4 SHA-1: 0184197a160e98d6a0f38d05fae90ab06b8acca0 SHA-256: 25835da080fa444e8e5b786ec637c650a789d33b1969e2d10e03bb7a58114766
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6485

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://sapporopools.com/contents/files/98093566338.pdf In PDF document text
    • https://alkirbilaw.com/userfiles/files/10348724722.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1619fb6201469b---kukikoxeveb.pdfIn PDF document text
    • https://static.yulava.es/js/libraries/ckeditor/kcfinder/upload/files/sakalopevefitere.pdfIn PDF document text
    • http://snuhonors.com/userfiles/file/vujebuwinotixakasonijorud.pdfIn PDF document text
    • http://cantinachitarra.it/userfiles/file/44212808357.pdfIn PDF document text
    • http://reichspfarrer.sk/file/vajaralasebivotamudenobak.pdfIn PDF document text
    • https://hbphoto.ca/resimler/files/favexazekixifek.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/file/50528052099.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161b4dacddd427---fadepif.pdfIn PDF document text
    • http://eidatlantique.antevox.fr/UserFiles/medias/89161156308.pdfIn PDF document text
    • https://cfacgroup.com/uploads/FCK_files/file/zapakituvovo.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dd62af39b49---xevalasafokisop.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/16989391861.pdfIn PDF document text
    • http://www.fichetalmeria.com/admin/kcfinder/upload/files/bodiva.pdfIn PDF document text
    • http://dvere.eu/assets/ckeditor/kcfinder/upload/files/bekezusufepolanodowij.pdfIn PDF document text
    • http://ibarugi.com/fckeditor/userfiles/file/3698200019.pdfIn PDF document text
    • http://veganogle.es/uploads/ckfinder/files/9251727477.pdfIn PDF document text
    • http://soojuspilt.ee/files/file/35989222818.pdfIn PDF document text
    • http://teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/widoma.pdfIn PDF document text
    • http://sammyurias.com/userfiles/files/45118951299.pdfIn PDF document text
    • https://bacsionline.net/userfiles/file/69694864293.pdfIn PDF document text
    • http://www.tramag.pl/upload/file/32125435759.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/161dd5449b540f---18385468750.pdfIn PDF document text
    • https://www.macfer.com.pt/kcfinder/upload/files/13697340682.pdfIn PDF document text
    • http://krajinar.cz/soubory/files/83509318922.pdfIn PDF document text
    • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/59650821487.pdfIn PDF document text
    • https://intimtreningdebrecen.hu/frontend/ck/kcfinder/upload/files/wuduxazofafavevedomomuk.pdfIn PDF document text
    • http://catmo.fr/kcfinder/upload/files/sidotenenexikowojotu.pdfIn PDF document text
    • http://manchetenewsms.com.br/ckfinder/userfiles/files/89196346789.pdfIn PDF document text
    • https://brakos.it/file/kuwonusekuzijo.pdfIn PDF document text
    • http://alhegazgroup.com/userfiles/file/17464058280.pdfIn PDF document text
    • http://larben.cz/media/images/upload/file/21235884667.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/7aba33ba470b1f1881039772c5747693/89212843554.pdfIn PDF document text
    • https://tenis.nabu.work/FCKeditor/datoteke/file/birodekadomuve.pdfIn PDF document text
    • http://abimobiliare.pl/pliki/File/xofuxukebalugata.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/ba4873c2e97fc6519f3f55f5eadadac3/domawisu.pdfIn PDF document text
    • http://glttek.com/userfiles/file/daxed.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d6e2f19a2b---kipejutapadudulazifosek.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=game+studio+tycoon+2+mod+apk+revdlPDF link annotation
    • 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_off0005b897.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b897.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B897 17900 bytes
SHA-256: 466f263984405f2c1b0a6b874850fe6f830931858b208416dc5912678889a9a0
font_01_sfnt_off0005e76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E76D 11204 bytes
SHA-256: 95b313befd98cf95d14380a215b5360530255dbf5abca8bf4ae34bae94878387
font_02_sfnt_off000601c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601C7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9