Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e37b95317e7e94d…

MALICIOUS

PDF

122.1 KB Created: 2021-07-28 05:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: f042cce67d0cba9d0146899642e4d03f SHA-1: b336978d3f4a4be74e5696033548ddf5257a9f2a SHA-256: 4e37b95317e7e94de30f527388aa3502c24dcd82f850364a27beedae06e482cc
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/4lo015vgmkd9rvmtbk6majhf86/83906221695.pdf In PDF document text
    • https://aquafilling.com/userfiles/file/fegotuw.pdfIn PDF document text
    • http://npi-management.org/ressource/site-image/files/tunuvajilu.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/583e7ec058762192f04b42ede29d5fcd/levedotibemi.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b199caca8---17479103100.pdfIn PDF document text
    • http://universalestetic.com/userfiles/file/zevirowawawadetobasam.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/6d854a9d68b071a6fb60b9e914fc66b2/mopasebavufevefoke.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0048988f878dedd9d8ea1e81e2ba554d/jorep.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609713628f986---tifumovuwan.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-6-24/20210624004401980986.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/7e4431ca485236289246fd6507c750fb/fugatumaramaligurujuv.pdfIn PDF document text
    • https://shibbirs.com/media/files/54834015390.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d167c6fc3---dudunejegikadiwa.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607fae9e4f0e4---57137175280.pdfIn PDF document text
    • http://toptoptraining.ru/img/upload/file/24391866386.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb93b636eae---2063564156.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/75319963048.pdfIn PDF document text
    • http://www.hgbehringer.de/img/files/files/dobevizuwen.pdfIn PDF document text
    • http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/31069407190.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/lauv675j7fhphi7qo85cij3pi1/fupigejigalasas.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a22ce756f5f---42564480481.pdfIn PDF document text
    • http://www.specemc.ru/upload/files/woxesezipa.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b889e1d9f74---43179066157.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/0g5uduem5edp4kli1tq10nmph0/97307144670.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=les+liaisons+dangereuses+lettre+81+texte+bacPDF 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_off00016fb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16FB8 20916 bytes
SHA-256: be2472a9d63848f8108f473ef8d09b42c8416ca791cfc1ff41e1e5cd2758bc47
font_01_sfnt_off0001a556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A556 11104 bytes
SHA-256: bd1ea2f5be828a200453d20117fab07be149a8025d4cc4764c3b177a6c720873
font_02_sfnt_off0001bf3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF3B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1