Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bcef7434081f2a1…

MALICIOUS

PDF

450.4 KB Created: 2022-03-08 01:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: a2fce3d4e95336a5c96f33a98434fe00 SHA-1: ddf7dd426a3913384a667ea359aced41f2f590e0 SHA-256: 3bcef7434081f2a12022560cc6f245377d478a578475ac4b50cd265b5d147858
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4712

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://diamond-marketing.cz/soubory/43477994768.pdf In PDF document text
    • http://urdu-hadith.com/survey/userfiles/files/83542493694.pdfIn PDF document text
    • https://perfecthospital.net/FCKeditor/file/luwapowisim.pdfIn PDF document text
    • https://roundtable106trust.org/admin/uploads/file/34116930910.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/potivetusoragipa.pdfIn PDF document text
    • http://afro-safari.com/upload/files/88108447885.pdfIn PDF document text
    • https://www.tristar-technology.com/ckfinder/userfiles/files/2309645815.pdfIn PDF document text
    • http://insei.eu/userfiles/files/sarozozid.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620c1764c86f0---93665470705.pdfIn PDF document text
    • https://www.crosstownnews.in/kcfinder/upload/files/gafatavukuzori.pdfIn PDF document text
    • http://change4best.ru/upload/file/58849182576.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/jigula.pdfIn PDF document text
    • http://uslugiinzynierskie.com/eurostyl/photos/file/gepubakematud.pdfIn PDF document text
    • http://hardevel.com/data/files/2696163107.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/47773580001.pdfIn PDF document text
    • http://beijingteye.com/upload/files/zitumizagowavedaxi.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/162076be512384---wisom.pdfIn PDF document text
    • http://www.sanbernardinoverona.it/_admin/kcfinder/upload/files/bagidobumuzexilitapod.pdfIn PDF document text
    • https://koparieshorvathbusz.hu/files/file/lopirusuxezadazuzos.pdfIn PDF document text
    • http://flussobjekte.at/kcfinder/upload/files/98704438307.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1621630a91a320---zopibuwodunoga.pdfIn PDF document text
    • http://agisinfo.ru/uploads/content/files/57920914538.pdfIn PDF document text
    • https://ntiverification.com/userfiles/file/xutawuxanikesewusexuzaf.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/lb4c9ltbq9sginrte546lcovls/tusovexobas.pdfIn PDF document text
    • http://bashtourizm.ru/uploads/files/88149913688.pdfIn PDF document text
    • http://probeg2000.ru/files/userfiles/files/67703024361.pdfIn PDF document text
    • http://autord.ca/site-uploads/bajepuwubolopejutowadip.pdfIn PDF document text
    • http://martonfogtechnika.hu/admin/kcfinder/upload/files/47410329067.pdfIn PDF document text
    • http://sztarmedia.hu/_user/file/80307041477.pdfIn PDF document text
    • https://goez3.com/10005001208290177/ckfinder/userfiles/files/pugudepoxome.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=adalat+movie+1976+songsPDF 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_off00069aa8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00069aa8.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00069aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69AA8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0006b1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1C8 10976 bytes
SHA-256: 14f3b4c53fcdfe7aba9ddfdeb6483d78506309f167fa1d47c5ec01773bc839be
font_02_sfnt_off0006cb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB1C 17980 bytes
SHA-256: f5f1178a449c5d4fc2dc39f5878744cb53031053c57533f2963ab908a3d97a33