Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca04142e738d35b…

MALICIOUS

PDF

56.1 KB Created: 2021-09-08 07:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 01ea13f2445b43fb2400dce9588f0033 SHA-1: 34c46d6cf6a1a95d47596421618b5de87b671cdd SHA-256: fca04142e738d35bbf46720e869ae241e2f5b68ec54075ac55016e7d33dcf7fe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan distribution attempt. It contains a link farm pointing to multiple domains, some of which are compromised WordPress sites, suggesting an effort to obscure the true destination or leverage existing infrastructure. The presence of external URIs and link farms indicates the document's primary purpose is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5305

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 http://costruzionibulagna.it/userfiles/files/badirawow.pdf In PDF document text
    • http://citadelcaralarms.com/userfiles/file/83785599332.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077dacd8a795---49818233842.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c6be730c88b---maxelosugenedutezuko.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160816c396604f---kukenigamuvi.pdfIn PDF document text
    • https://living-stone.lu/userfiles/files/62148496216.pdfIn PDF document text
    • https://eurotig.ro/file/54905746235.pdfIn PDF document text
    • http://dlevitin.ru/fck_editor_files/files/26167985719.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16092a4f57dd1f---84011109391.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/45332336512.pdfIn PDF document text
    • http://parvazyab.net/basefile/api203/files/nemivatatomajefowe.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc4155a19f---24720508886.pdfIn PDF document text
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/ximakoreret.pdfIn PDF document text
    • http://kath-kiga-bw.de/bilder/berichte/file/57987356643.pdfIn PDF document text
    • https://rux-thai.com/ckfinder/userfiles/files/36853592443.pdfIn PDF document text
    • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/90715444055.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a68d868c3ad---9386877622.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/perudafu.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160e6bee468a82---xasosobuxusidasenalanuxu.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/kseongfg02cdabbvclps7v7l81/54975529436.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/0233454d090f79856e56a5f3bf4242b0/40260129525.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/3fbcb47ca8da70c69c57358e19896e2d/79816384300.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/d19af308b411fd3a62bf9623bf9a634d/27524954081.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=medical+terminology+a+short+course+6th+edition+pdf+downloadPDF link annotation

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