Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d72dc91274facf…

MALICIOUS

PDF

338.1 KB Created: 2022-03-05 01:13:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-06
MD5: ebb1aadb067163aab883efe512b7afbd SHA-1: 90c49736bf37cba9f56460e96ab368e37aacfa46 SHA-256: b5d72dc91274facf93c8f1d67dc987f10b3d748fc68c44f5e0a903064910de83
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6658

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 http://surestegc.org/documentos/file/moregavajalekazevidejuw.pdf In PDF document text
    • http://ser-buk.com/userfiles/file/18596081862.pdfIn PDF document text
    • http://snft.ro/media/file/gorekifeneginigukadulata.pdfIn PDF document text
    • http://lindendirect.com/ckfinder/userfiles/files/gimukamutulopemi.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/xikonedofu.pdfIn PDF document text
    • http://marcobernini.it/userfiles/files/davokizisunorudovusaziba.pdfIn PDF document text
    • http://www.chestheart.org/assets/ckeditor/kcfinder/upload/files/2287700489.pdfIn PDF document text
    • https://finduspeople.it/upload/files/82013994708.pdfIn PDF document text
    • http://hyunbulsa.org/~ewedd2/userfiles/file/60082817305.pdfIn PDF document text
    • https://tspinstruments.com/cache/fck_files/file/38905340137.pdfIn PDF document text
    • https://www.sinditamaraty.org.br/site/public/ckeditor/kcfinder/upload/files/tidamum.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161fcafacb21c3---64341840263.pdfIn PDF document text
    • https://dpt-mh.com/uploads/news/files/fezukimagujuzofoker.pdfIn PDF document text
    • http://anpamedical.com/kcfinder/upload/files/28197421499.pdfIn PDF document text
    • https://vatlieuxanh.vn/resources/uploads/files/jaxomowuboduzasane.pdfIn PDF document text
    • https://jjpremiers.com/files/safejatomokurovepitaxutur.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/41506120286.pdfIn PDF document text
    • http://www.naraihillgolf.com/admin/userfiles/file/bebatuli.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1620f1a2747120---88827885828.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621b9f27c2130---62009624875.pdfIn PDF document text
    • http://sur-mesure.kesslord.fr/upload/file/2369010633.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/162077fb2a3977---mesivoxivaweba.pdfIn PDF document text
    • http://www.veslovani-vsb.cz/soubory/file/kutemazafiwa.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/gn3o8pqkpsi6coka7eratk647s/42704758543.pdfIn PDF document text
    • http://ellipsisnovel.com/file_space/files/puvag.pdfIn PDF document text
    • http://architettosbaffo.com/userfiles/files/bitizinegerizenufuw.pdfIn PDF document text
    • http://faceti.es/fil/ckFiles/files/xezejekesiki.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2022-3-3/20220303095833596042.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621f027f79d1f---radamup.pdfIn PDF document text
    • http://gucaoyun.com/uploads/file/210249218751.pdfIn PDF document text
    • http://lesbambousbleus.fr/ckeditor/upload/files/48920259979.pdfIn PDF document text
    • http://www.tiendadelbordado.com/ckfinder/userfiles/files/86242142420.pdfIn PDF document text
    • https://thefashion.asia/admin/kcfinder/upload/files/mobijomap.pdfIn PDF document text
    • http://veterinariacomportamentale.it/userfiles/files/67851134004.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16208e8d580bf1---gutupuwig.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=go+math+enrich+book+grade+5+answersPDF 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_off0004ca96.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004ca96.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004ca96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA96 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004e1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E1B6 11264 bytes
SHA-256: 166100991009950f9ea86f670f70e9f0f76f9792c39bf0f9c0bc6f927b065c4a
font_02_sfnt_off0004fbe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FBE1 22848 bytes
SHA-256: 46172bfae7e43bb64498a2ce18616dad36e3a25816c18ca924a8fcb1da776219