Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ccf74b65126f51c…

MALICIOUS

PDF

50.3 KB Created: 2021-09-05 21:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 08f6dd54a7573332d8095bf39f3f0a9a SHA-1: 841d2f403fae6f713fc553ceda1246711b24ad1f SHA-256: 9ccf74b65126f51c319e8f4091d67036efa92bc23434127d51bc8fcd535aad47
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to various domains, some of which appear to be compromised WordPress sites. The primary purpose seems to be directing users to external resources, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9259

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://catamma.ru/uplcv?utm_term=synonym+and+antonym+worksheets+for+grade+4 PDF link annotation
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160823224c19d1---58838443749.pdfIn PDF document text
    • http://pensjonatagat.pl/userfiles/file/serilosetog.pdfIn PDF document text
    • http://firmykominkowe.pl/Obrazki/edytor/file/biroduxenotoso.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607de2c089b86---79688109825.pdfIn PDF document text
    • https://www.lipca.com/ckfinder/userfiles/files/lepujizojavakeg.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/065c653989e3a75df138d44c35aee505/nakekagova.pdfIn PDF document text
    • http://flightshop.jp/images/blog//file/xinaxotofasuwabimevobolij.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/nifezudejozufevapi.pdfIn PDF document text
    • http://veitali.com/upload/files/88936800497.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1611e3ebb68a2f---79195270316.pdfIn PDF document text
    • https://paperland.bg/uploads/file/10551008980.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096cc4011c16---takebir.pdfIn PDF document text
    • http://kingbikeonline.com/images/upload/File/9875192848.pdfIn PDF document text
    • http://ldksolar-officialliquidation.com/userfiles/files/19007304675.pdfIn PDF document text
    • https://burkina-businessschool.com/business_school/uploads/file/tefipigupadilezuz.pdfIn PDF document text
    • http://abbuffalowings.com/uploads/files/muwinajulilafe.pdfIn PDF document text
    • https://airshow-bg.com/file/kisosajakixizavos.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7c11872d9---budovebuzuvetosage.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/46186459282.pdfIn PDF document text
    • http://szpital-sulecin.pl/images/fckfiles/file/sobadepedozuruno.pdfIn PDF document text
    • https://webhosting4.net/media/file/lijixugolikagozabepijobe.pdfIn PDF document text
    • https://tp-pos.com/uploads/image/files/mafarafan.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Open this report in the interactive analyzer, or submit your own file for analysis.