Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3c18bc35684b9c…

MALICIOUS

PDF

74.3 KB Created: 2021-08-28 07:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 3ef6f800dd1b67284e389e11d304db18 SHA-1: 737d9169d21e5b096dac9f0c99e7b9dd86724ff5 SHA-256: 4e3c18bc35684b9c9f276a3ff24b44854b3f6b4d9555dc96d423c5c7e8ba444e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160892cb67670a---99854570415.pdf In PDF document text
    • http://tandartsindex.nl/images/uploads/66779658260.pdfIn PDF document text
    • http://xn----7sbabjkhbzbqti4a3apfmdd2s4b.xn--p1ai/ckfinder/userfiles/files/filimilulebezufiguxo.pdfIn PDF document text
    • http://wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/41540898254.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/7t3pulptet4054bn5b8e319f62/98461523094.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/db1b85a837f7af2c708722cb73bd8743/32540171063.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06f0716043---42375646094.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/16111e06cf0b30---30577486351.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/2962886499d0c52dda87f06f87f46c8c/kekix.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8e08b204747e721748e849a55baf783c/54677521654.pdfIn PDF document text
    • https://alutat.com/data/file/61828747252.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/f69fb4ee048d4daaf82541754451d44a/dododadafukexulosoko.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d7877b9d2---pipabamifas.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/5e03d51b2663a0c528af839de3c4d920/boditoriwowab.pdfIn PDF document text
    • https://fibra-optica.ro/ckfinder/userfiles/files/nexeru.pdfIn PDF document text
    • http://xn--80aantfcaehjbxzf1m.xn--p1ai/userfiles/file/68034424173.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d69dca837a---penolivogig.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7980126e5f---35372079726.pdfIn PDF document text
    • http://bycongroup.com/UserFiles/file/81423494413.pdfIn PDF document text
    • https://maggies-handmade.com/UserFiles/files/73327725399.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/gigiviwiwivuze.pdfIn PDF document text
    • http://clinicaveterinariasangiacomo.it/userfiles/files/47939939167.pdfIn PDF document text
    • http://beergolfers.com./blog/images/file/bejagutafili.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093630947abf---feximiwibapizi.pdfIn PDF document text
    • http://armanetti.com/images/64294488322.pdfIn PDF document text
    • https://kisikana.hr/UserFiles/files/99528851190.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddbc63a2831---besuvaxise.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=biology+notes+class+10+cbse+life+processes+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_off0000bfea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFEA 15904 bytes
SHA-256: d0f218428d9aa3daef3d02b66d638225a661f43016ec7394cd0c5b01dc441cf6
font_01_sfnt_off0000e83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10051 11276 bytes
SHA-256: 25fa2d58826f10a98ee65335d3078bc724fd0d307f47ef1cd1a6765100e6faec