Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99bfa882fe1717c…

MALICIOUS

PDF

81.3 KB Created: 2022-02-12 13:14:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: d686c7b6030dad12c7b33f6641c83f3f SHA-1: 9abde182e5e6a526046d81f9942629ad3ec97194 SHA-256: f99bfa882fe1717c50a221a6c380cb73c02c82e3741f39f84c900de3b9b894c5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://loheb.co.za/XSRYdR1H?utm_term=alkanals+and+alkanones+pdf PDF link annotation
    • https://www.vyrobadps.eu/admin/kcfinder/upload/files/37094098476.pdfIn PDF document text
    • http://ecilingirler.com/resimler/files/52568407962.pdfIn PDF document text
    • https://www.mnogotrop.com/ckfinder/userfiles/files/xufafoduvasuzufuwikelipok.pdfIn PDF document text
    • http://topoint.cc/userfiles/fckFile/20220110065431.pdfIn PDF document text
    • http://tetobox-budapest.hu/uploads/files/jomumetomajeruno.pdfIn PDF document text
    • http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sonopasapudarejiro.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/0f832e66dff3966ff111a222c1b7b8ca/nefofibo.pdfIn PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/72474451702.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161d9f57e5ca63---18642201750.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/kalipujipamokemuzumevu.pdfIn PDF document text
    • https://nabijdefossa.nl/upload/files/15896700554.pdfIn PDF document text
    • https://radekslodkiewicz.pl/files/file/menararone.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161ad904678a3c---bixirif.pdfIn PDF document text
    • http://cwpni.com/userData/ebizro_board/file/41877516.pdfIn PDF document text
    • http://limuzine.md/userfiles/file/63656401261.pdfIn PDF document text
    • https://inprovitcolombia.com/ckfinder/userfiles/files/tokosoxotogem.pdfIn PDF document text
    • http://innovad-ltd.com/userfiles/file/47943496174.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/28729551475.pdfIn PDF document text
    • http://melody-house.ru/kcfinder/upload/files/woguxijiden.pdfIn PDF document text
    • https://www.hotelrestaurantmacarena.fr/ckfinder/userfiles/files/43500491852.pdfIn PDF document text
    • http://mawarids.org/mpfiles/file/rezodusafaw.pdfIn PDF document text
    • http://nuraski.pl/wsg/userfiles/nabuxabemukumomazimefuj.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/482d5521849d76f2ec1528d1698d3aaa/tebijaxovowamagunese.pdfIn PDF document text
    • http://www.lesboutiquesquercitaines.com/kcfinder/upload/files/xuvudasutefeteravaxobif.pdfIn PDF document text
    • https://yodishit.com/uploads/userfiles/file/nabadojugon.pdfIn PDF document text
    • https://windscrm.net/files/file/rosomad.pdfIn PDF document text
    • http://saconsultancy.com/userfiles/file/mojonugi.pdfIn PDF document text
    • http://miskolciharsona.hu/pictures/file/40036776415.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD578 10272 bytes
SHA-256: 6c1711db4c64a04e9e234b1c87e8939fa20e599d1b4caf2275318e2b46457acb
font_01_sfnt_off0000ecb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB5 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000103d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D0 19760 bytes
SHA-256: ff2b3e72b0dc5cef6f9c3ae9966db1d509545b0e7115513745b4e3e1d5ab64c8