Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff21ca04f3e82f5b…

MALICIOUS

PDF

397.2 KB Created: 2022-03-05 13:36:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-13
MD5: 0d152295b97f103cdc5cf8e1190518f4 SHA-1: c76bd602a8924853b978e0f9e72122f9990dc4d4 SHA-256: ff21ca04f3e82f5b9c1ec2d035a358511e1ecb2bb6a3db691db47ffb137e0131
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7982

Heuristics 5

  • 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.
  • 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://yubit.co.za/XSRYdR1H?utm_term=funny+questions+with+answers+in+marathi PDF link annotation
    • http://emachn.com/data/attachment/file/29227356224.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/77170501406.pdfIn PDF document text
    • http://xn--djr00fsyfv0o5qgy9u.com/filespath/files/20220213041204.pdfIn PDF document text
    • http://rogatka.osieczna.eu/userfiles/file/81458554808.pdfIn PDF document text
    • http://aktasmatbaacilik.com/resimlerfiles/wadotebilutitexixuv.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/xajiwiwizaw.pdfIn PDF document text
    • https://bookings.gulfstarsports.com/admin/kcfinder/upload/files/57698741822.pdfIn PDF document text
    • http://hidrometa.com/images_upload/files/29253995305.pdfIn PDF document text
    • https://neipco.ir/data/file/zizevewi.pdfIn PDF document text
    • http://muzeumkonstancina.pl/attachments/file/sowimurugenupajiwixi.pdfIn PDF document text
    • http://hftyby.com/upload_fck/file/2022-2-27/20220227044749909985.pdfIn PDF document text
    • https://chief-moving.com/editor_upload/file/rijusalurazananerinu.pdfIn PDF document text
    • https://speculatio.in/userfiles/file/nuvepotaloxobuwidumepop.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1621370f9166fe---14455419136.pdfIn PDF document text
    • http://roberlo.cz/www/files/file/26112257888.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1620d7a87098eb---rodemezogod.pdfIn PDF document text
    • https://newtech-utm.pl/userfiles/file/pewaxutenujonas.pdfIn PDF document text
    • http://auto-berles.oldalunk.hu/userimages/files/fowadonirufegojeneviwupa.pdfIn PDF document text
    • http://designbyjoseph.com/uploads/File/siposor.pdfIn PDF document text
    • http://rewitex.pl/userfiles/file/jixuvafopuxe.pdfIn PDF document text
    • http://www.leinsterdancing.com/uploads/files/faxetubov.pdfIn PDF document text
    • http://modern-pro.ru/files/file/fosubasubekok.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 extracted file (font_00_sfnt_off0005bc8f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005bc8f.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005bc8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC8F 21600 bytes
SHA-256: 388fce1bf53f3328a5172e2f425d601bd37574e32aabce6210f74c7607b46ee5
font_01_sfnt_off0005f5fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5FC 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00060d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D1C 10748 bytes
SHA-256: b3c9188a361612bc4ddec874918dbd0099b6c00f3d3b574349e858af640f72a1