Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8d5d48b5088327…

MALICIOUS

PDF

73.6 KB Created: 2021-10-03 03:51:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 8309ac531a96601cb77bb8cdc033fc77 SHA-1: 7431c60663f1b46e969578c402ae2109c759cc02 SHA-256: 5d8d5d48b50883276aef49b29442c938d85b7737a13d443d96715ad2e6c38552
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://markjfox.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/53537542703.pdf In PDF document text
    • http://dirpub.org/editor/ckfinder/userfiles/files/silazuj.pdfIn PDF document text
    • http://0975811252cool.linker.tw/files/ravijusamitoviloroku.pdfIn PDF document text
    • http://synergytaekwondo.com/click2buy_newp/userfiles/file/72606373756.pdfIn PDF document text
    • http://universalthailand.com/images/uploads/ckfinder/files/60842070677.pdfIn PDF document text
    • http://unternehmensberatung-hegenbarth.de/userfiles/file/83010289089.pdfIn PDF document text
    • http://kxqcgs.net/filespath/files/20210920005131.pdfIn PDF document text
    • http://gdlejia.com/uploadfile/files/20210905_131045.pdfIn PDF document text
    • http://e-kva.ru/admin/ckfinder/userfiles/files/sejarepunu.pdfIn PDF document text
    • https://xyoaa.org/sites/default/files/files/kanudal.pdfIn PDF document text
    • http://videotour24.com/data/fckupload/file/37814735395.pdfIn PDF document text
    • http://ncdesign.it/userfiles/files/tizatefipek.pdfIn PDF document text
    • http://unicorn-furnitures.com/d/files/wewimegufufarewowib.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff6b6769e8---sometomubefigoravup.pdfIn PDF document text
    • https://praktijkbinnenstad.nl/file/90711733907.pdfIn PDF document text
    • https://decisionstogo.com/fck_image/file/jixiwevokoliwadowatatono.pdfIn PDF document text
    • https://holyfamilyhospitals.com/ckfinder/userfiles/files/dopumutanigekesokozokuw.pdfIn PDF document text
    • http://kxqcgs.com/filespath/files/20210906170039.pdfIn PDF document text
    • http://kavernoklub.com/campannas/file/juzasamiveleruru.pdfIn PDF document text
    • http://nawoo.net/userData/board/file/5169575813.pdfIn PDF document text
    • https://samoinstitute.mn/uploads/assets/file/19788193176.pdfIn PDF document text
    • http://tandprotheses.com/ckfinder/userfiles/files/janala.pdfIn PDF document text
    • https://tennis-samara.ru/img/file/95161589757.pdfIn PDF document text
    • http://pijntherapie.be/uploads/files/texikufudipixiwesesir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=how+many+glasses+in+32+ounces+of+waterPDF 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_off0000b675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB675 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ce87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE87 18580 bytes
SHA-256: d9614709c20158ce3a73ca98da40d614e201e3a96212c442babe6c98dc62ee59
font_02_sfnt_off0000fdd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD7 11260 bytes
SHA-256: 3907bcfa4baea3996c3d2679341ddc12a0dd7fddf6c54d22cb72e05f882b029f