Malicious PDF — malware analysis report

Static analysis result for SHA-256 c54177d0a6b6eade…

MALICIOUS

PDF

54.3 KB Created: 2021-05-21 01:35:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bc84f172bc4f1f20809a50765626a6d SHA-1: 647521e5c49b0a7d7f0f57bcf228aa55e8b901af SHA-256: c54177d0a6b6eadecef82c513232e82201743c21729bd239ba5ff5171a34d2c1
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and numerous links pointing to compromised websites, indicating an attempt to redirect the user to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8849

Heuristics 6

  • 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.
  • 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
  • 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://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/6cde7451937b8b97689a91030c5714e9/93739783674.pdf
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757be031969---fumibatu.pdf
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/209sms0s6srg7u9ulci9or110n/nimowatiwa.pdf
    • http://alnoorcity.com/userfiles/file/20389381557.pdf
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bfb1449a75---89809169132.pdf
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/7e3b8c1c0529628ba4c1662186028b97/kirurajiruk.pdf
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16075ee3b3df2a---87980334256.pdf
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/58ba6a5e93700100695141b32cb8ca3b/kosilafosixokosavanor.pdf
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16071535dcc5b9---pinomotaxebib.pdf
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/41mfn5r7t1n81hqpvttdpv7uih/dunutuzejupobezutuxugora.pdf
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073875cc5064---3933225789.pdf
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16076f7355f6cb---26905338498.pdf
    • http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210517163508109364pv13ys.pdf
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609294f75cea2---fubuwoparuludam.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=bill+of+lading+template+word+document

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