Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7c85ec009a0464…

MALICIOUS

PDF

79.0 KB Created: 2021-09-06 12:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: eb6ba32c89bbca4b2fa9b26c616019ff SHA-1: ba318d7b79c1d69e1c697a2a2ecc98ed6720d718 SHA-256: cd7c85ec009a04646466ed75725907ebb97807f7281ea27c0a650ac819945699
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 http://kaies.cn/upfiles/file/turofi.pdf In PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/4fb959b28edeec6fe3278850986f6724/83923320303.pdfIn PDF document text
    • https://sambelteri.com/contents//files/51042590045.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16095318f74c49---dupufinetixidomoru.pdfIn PDF document text
    • http://tarasovfabrika.ru/uploads/file/jalozinojupowarokakimukat.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16101323555adf---besizikivokomozire.pdfIn PDF document text
    • http://heritagecarletonplace.com/clients/c/c2/c23aa4fb54f25340752d20cfcff880b2/File/fuvokalepidil.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/33f8ddekm9vtl15bpd9bkpae44/48948364910.pdfIn PDF document text
    • http://cioccolatogallucci.it/userfiles/file/sedurajijepokidarot.pdfIn PDF document text
    • http://imhkayseri.com/resimler/files/jolalarisenaxaputadupagus.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/nefedakinexewezave.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/16127c64c5ce13---ruzilutunam.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/dihlj10v859p8e2cuk94l28457/vepipisaguwogon.pdfIn PDF document text
    • http://hb1004.com/userData/board/file/favoselavuzegudosijez.pdfIn PDF document text
    • https://kozhikodedeaf.org/admin/my_files/file/rujamomanezixelowub.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097193ab2649---82978937472.pdfIn PDF document text
    • http://ddrwc.net/clients/869849/File/tofevirul.pdfIn PDF document text
    • http://tensoinox.com/userfiles/files/70826064389.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f84c0e870d---mefumomox.pdfIn PDF document text
    • http://vinmexindia.com/uploads/94188361393.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/riweritusika.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/48c36e07c489f8cd067d19bdb243b5a6/23613440446.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160bbd3cf5f6c5---6819109270.pdfIn PDF document text
    • http://gerocuki.hu/user/file/1639370068.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=aminoven+infant+10+pdfPDF 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 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_off0000cfb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB1 10568 bytes
SHA-256: ab9f4773067beb5f6d7ced9a8ac7be3e91154cfe23f820709d59e6addefc087c
font_01_sfnt_off0000e7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ffe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE6 18408 bytes
SHA-256: 3d3f9042a4ab413724a6a9891e3924fb069ef5af5ad3f7f1a27ec815e81a6158