Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f564a4fc1041ed…

MALICIOUS

PDF

63.7 KB Created: 2021-10-06 14:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 5b1d90293b60e7f0cb59b4271c9dbc60 SHA-1: 526786ff5f87d9b809ed805be526110cac6e0d80 SHA-256: e0f564a4fc1041ed69889aed8e0c6e1e724ea565aa5fa269cb233ab13c7990c2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains numerous external URIs and link farms pointing to compromised CMS uploads and disposable hosting, indicating a phishing or malware distribution attempt. No scripts were extracted, but the presence of external links and the overall structure strongly suggest a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6241

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://infrive.ru/uplcv?utm_term=drawing+a+nose+for+beginners PDF link annotation
    • http://smartvoicecom.com/userfiles/jewogobirame.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614064764b8d3---zakevukujawusutabegero.pdfIn PDF document text
    • http://ewtch.com/upload/files/68969015272.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/vupulusutazonuvejonewifi.pdfIn PDF document text
    • https://hoangphatdanang.xetnghiemadndanang.com/uploads/image/files/valeremujesir.pdfIn PDF document text
    • http://www.ettermanenterprises.com/ckfinder/userfiles/files/xupujelaf.pdfIn PDF document text
    • http://letnaterasa.customreal.sk/data/files/35174296453.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/rpbmn1udt6gi8uop6hsu5558ij/44827292336.pdfIn PDF document text
    • http://jmk.kr/ckfinder/userfiles/files/7165931419.pdfIn PDF document text
    • https://preciseenergygroup.com/media/36567593908.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1615cfb0d66ed1---dugefupebaxali.pdfIn PDF document text
    • http://shangrilatheshow.com/ckfinder/userfiles/files/53684760732.pdfIn PDF document text
    • http://placc.info/up_image/36507909211.pdfIn PDF document text
    • https://eqonetech.com/upload/userfiles/files/82947778935.pdfIn PDF document text
    • https://www.iieng.org/editor/ckfinder/userfiles/files/dojexedanufitesavitat.pdfIn PDF document text
    • http://arredamenticucinesiciliane.it/userfiles/files/kusejifeguleditodobe.pdfIn PDF document text
    • http://gruppocaminiti.it/userfiles/files/25914960320.pdfIn PDF document text
    • https://www.gurgy.net/ckfinder/userfiles/files/tipadixotalutuniguvava.pdfIn PDF document text
    • https://pr-dienst.ch/file/xokolavikokuvitefimusutar.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140201632ad6---27486338565.pdfIn PDF document text
    • https://nffcd.org/userfiles/files/91869863887.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/b898e06f5d84d5e5a4f53cf93fc6b1c1/maburusepomemimesudumuno.pdfIn PDF document text
    • http://metamorfozyayincilik.com/userfiles/file/44080576649.pdfIn PDF document text

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