Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd84974a941bc6f…

MALICIOUS

PDF

87.0 KB Created: 2021-07-14 04:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: ef8ad5924ee559ab7c83d6483ad9b6a2 SHA-1: bf06bcf0a9382d0e887510089f1dac03a31d7383 SHA-256: 3dd84974a941bc6fd92d1a406a26d81fe5dfcc92739c1a20f7f96a135551b407
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://smidgel.ru/uplcv?utm_term=roblox+free+download+unblocked PDF link annotation
    • http://gernano.eu/gfx/userfiles/files/22637024215.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609da104bc521---bizulejilajiged.pdfIn PDF document text
    • https://tvmreza.tv/ckfinder/userfiles/files/wiroxagod.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/96f8183b532c928b119533b7c131a0b7/37447583131.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a076103ed---lenorebovutiremekez.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/3855a201a6cc65a45c988ae80f71c57c/77014903161.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160870a2092279---dadubofidudomas.pdfIn PDF document text
    • http://premiercontractinginc.com/files/file/47571136770.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e376c7950---42921106659.pdfIn PDF document text
    • http://alanurturizm.com/rsm/files/92914018971.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/3lgj1jctjag5o4vhhuj91139rr/57495146887.pdfIn PDF document text
    • http://abroadster.com/files/komimakibiref.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/1c5bf59089a2a035a4c5e0ebc5e0a8bd/lonagigiminopasutajizesu.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076be93a9e7a---mexozowagutejaju.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/32b901aabd85aa2f20da96dd70295db1/fafusenolakef.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aab559c686b---77553817733.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/likemekifawewikot.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/961d809bc72e444255e49f9bed704d5c/83087462096.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/02d21a8981d8fd40a275d69a7ad7c8e1/47090800518.pdfIn PDF document text
    • https://lienlacanien.com/img_pages/file/pemosaserusugiwu.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/f8e23da9e4ccce5c060d3e077f0f85ca/21397820033.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/5m38bprdcr9qefgt3dsdtnilt4/30214210651.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-5-17/20210517035043849375.pdfIn PDF document text
    • http://innotack.com/userfiles/files/30125965114.pdfIn PDF document text
    • https://motelandratecuci.ro/userfiles/file/tobeweposuzewipokuji.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/e207f26d9c67e228e174dd19cd88c3f2/43407667117.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_off0000f250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF250 16788 bytes
SHA-256: a99ee7d836954e708a2bc974cfac249382c586db2f9ad800b264404a02ee6782
font_01_sfnt_off00011deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DEB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13602 10676 bytes
SHA-256: 6e1dc87393e2914a60c341e45d9b363d0bccf4188dcfed1a571ed520a28338bb