Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e10646176108c3…

MALICIOUS

PDF

72.9 KB Created: 2021-10-01 04:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 4f8d1cf16aa0d4007361fa46f3e1712c SHA-1: bc0e9a5fd8995b1e74565bad81775c6ef5e1b02f SHA-256: d3e10646176108c36bedea15478628e177fefb98f89f00ba6da6930f7687bb85
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://laborke.ru/uplcv?utm_term=hardest+song+piano+tiles+3 PDF link annotation
    • http://chukgoobok.com/files/fckeditor/file/luzonalajapo.pdfIn PDF document text
    • https://ecableapp.com/FCKeditor/FCKimgUpload/file/46651566265.pdfIn PDF document text
    • https://ebmcordelles.progess.com/userfiles/file/sajitirowaviw.pdfIn PDF document text
    • https://puntodeplacer.com/userfiles/file/93026497637.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613019d2314ff---wifatigusolularivu.pdfIn PDF document text
    • http://s2ipower.com/survey/userfiles/files/2193320189.pdfIn PDF document text
    • http://kvarkeno56.ru/userfiles/file/1387196570.pdfIn PDF document text
    • https://aneri12.eu/res/file/20377678890.pdfIn PDF document text
    • http://goldenagegroup.vip/userfiles/file/5052185364.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/10584442943.pdfIn PDF document text
    • https://christianklein.eu/Quansis/ckfinder/userfiles/files/56822394958.pdfIn PDF document text
    • https://flcevent.fcu.edu.tw/plugin/ce1/ckfinder/userfiles/files/20210904055524.pdfIn PDF document text
    • https://network-italia.it/file/wamusubovigonafomufuz.pdfIn PDF document text
    • http://rvhifi.cz/files/file/rasati.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/k4b3gf8a7kuvcn6mqc4c2u6aue/viposopin.pdfIn PDF document text
    • http://lmnn.ru/userfiles/file/96757724249.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140c4f8a3a94---32354359916.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/161565f8090194---47362919572.pdfIn PDF document text
    • http://gsnursing.in/ckeditor/ckfinder/userfiles/files/23044045282.pdfIn PDF document text
    • http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/varaxav.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/265364c18d62ee63de69587716ab05b5/nojuvotos.pdfIn PDF document text
    • http://gibisch.org/files/files/zemukafopivekemometix.pdfIn PDF document text
    • http://nikkenj.com/userfiles/file/geturoxefumizavifexogo.pdfIn PDF document text
    • http://www.forteks.com.br/admin/ckeditor/ckfinder/userfiles/Images/26171466973.pdfIn PDF document text
    • https://searchkar.com/ci/userfiles/files/60445459215.pdfIn PDF document text
    • https://sensiblemachines.com/ckfinder/core/connector/php/files/52320469193.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.netReferenced by PDF JavaScript
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8FD 10732 bytes
SHA-256: 40e91e955f2d1d55f4e0078a803184003fcaed47a2803e0c63713315d39e463c
font_01_sfnt_off0000d17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17D 17204 bytes
SHA-256: 0e10b47bdd90fe922b9b375833307e21239b2c592c6bd725402db0e3227e0b98
font_02_sfnt_off0000fdcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1