Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbef537ddd3a0cc7…

MALICIOUS

PDF

594.3 KB Created: 2022-03-19 15:38:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-24
MD5: 29e8d6a10ff6d24b2c9f603dcc48c015 SHA-1: 96b4032f51d6bd7787723c53d87a353605bd8c57 SHA-256: cbef537ddd3a0cc721d9e50ce75fd04cebe158d9dcad0e1674f395b9a14ccb70
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3666

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://ilonew.tasksplan.com/userfiles/files/tegevefadefiza.pdf In PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/8c8a55092b17286daac368ce05009acc/ritetakefewatug.pdfIn PDF document text
    • http://kapitan.eu/upload/files/10429380208.pdfIn PDF document text
    • https://congchung7.com/upload/file/23104402567.pdfIn PDF document text
    • http://s-privod.ru/userfiles/file/famitubezoguxepadowod.pdfIn PDF document text
    • https://kme.pl/global/app/webroot/uploads/file/16437309191077.pdfIn PDF document text
    • https://suacuasathcm.com/uploads/files/57029569530.pdfIn PDF document text
    • http://textileparts.net/userfiles/file/26420559792.pdfIn PDF document text
    • http://sportsbettingconsultants.net/cote_dor_import/admin/ckfinder/userfiles/files/satiru.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620c18bc706ad---45951158867.pdfIn PDF document text
    • https://www.bakkersvlaanderen.be/resources/plugins/ckfinder/userfiles/0/files/pefuwukogonepewopudo.pdfIn PDF document text
    • https://jphotographyllc.com/userfiles/file/zuwutop.pdfIn PDF document text
    • https://reazfarah.com/ckfinder/userfiles/files/49398180708.pdfIn PDF document text
    • http://dighakanchaninternational.com/FCKeditor/file/71354268766.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621d1cd95b357---mojafonu.pdfIn PDF document text
    • https://szekszardportal.hu/userfiles/file/43236277114.pdfIn PDF document text
    • https://vinaskitchen.com/nbloom/fckuploads/file/2339031347.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/gefaz.pdfIn PDF document text
    • http://delannahotel.com/user_img/file/6928098684.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/162016f24bdadb---85881106152.pdfIn PDF document text
    • http://yuhongzg.com/d/files/34709245839.pdfIn PDF document text
    • http://swvocal.com/data/se2/file/wofexidodemukobudu.pdfIn PDF document text
    • http://topclinique.ma/kcfinder/upload/files/ritekij.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/162189cd049539---18365373332.pdfIn PDF document text
    • http://hamzalegalservices.com/userfiles/file/27657249248.pdfIn PDF document text
    • https://radekslodkiewicz.pl/files/file/484240328.pdfIn PDF document text
    • http://rem-proekt.com/f/file/loperategepuzaman.pdfIn PDF document text
    • http://polsko-czeskieporozumienie.cci.pl/userfiles/file/14455739788.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=durga+saptashati+in+telugu+pdf+with+meaningPDF 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_off0008da20.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0008da20.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0008da20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA20 17852 bytes
SHA-256: 5ecd470fc610311973ad087e33851d5613ee0ceb5f8493e02d2062da4ef8963c
font_01_sfnt_off000908fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908FB 11012 bytes
SHA-256: ce9808ed3573791798bfe7f7f25f593d07931ec13a12f0acbf5920b79a331de9
font_02_sfnt_off00092241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92241 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9