Malicious PDF — malware analysis report

Static analysis result for SHA-256 1146250e5cf54a8b…

MALICIOUS

PDF

64.0 KB Created: 2021-06-01 19:02:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: de2e8f4384fc188a55714601a1efb3f8 SHA-1: d19bc468d438818138fad903a201d003233472ff SHA-256: 1146250e5cf54a8b5393406fa576c957d7f7ee0ce67c945738b1edf130a3cb42
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malware. The ClamAV detection and ML classifier indicate a high likelihood of malicious intent, specifically identified as a phishing trojan. The embedded URLs and the document's structure strongly suggest it is used to trick users into downloading malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8201

Heuristics 5

  • 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
  • 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://chcial.ru/uplcv?utm_term=bluebeam+revu+extreme+2018+serial+number+and+product+key PDF link annotation
    • http://kondicionery-lubertsy.ru/upload_picture/file/nuxakesiterikifezolafafax.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/vemob.pdfIn PDF document text
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/3f7bc4faae35c1869aa7de3bf3c6e3a6/80131164908.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/835d1aa6b96b7235cd57c6a2f595f6f8/7150577075.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/2rloama5iuf0kq539q1fkh1adb/xuxir.pdfIn PDF document text
    • http://dmhu.eu/uploads/uplib/file/23246217463.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/160aba443d5b6f---jarupojawawipagunitoze.pdfIn PDF document text
    • https://binarbaidservices.com/public_html/userfiles/file/madabikizo.pdfIn PDF document text
    • http://shs1977reunion.com/clients/41590/File/gixedorutazasur.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8b954f2d3---talibufazojejakuxuxufo.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/70001024052.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/57b0bee4a8e3df35ae8cad8f785c0d5d/zixote.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/7e53eec2d93260b3466f7f89d4451a1c/47695786815.pdfIn PDF document text
    • https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/ng3segc3te9pltpmadom8hvp7s/dopijariji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA1 6104 bytes
SHA-256: 5effac0dea45a15585b8d003114888689fbfea1842bbe3b9e537bdceb76b9514

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