Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6cddd87edf5119b…

MALICIOUS

PDF

58.5 KB Created: 2021-05-26 04:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 552462edd3bb646f7e56084560bba9db SHA-1: 07571cbb43731e6ac4558d12c4e524828eb4ee49 SHA-256: b6cddd87edf5119b90ab02fcde3a7620ae789a5d5d19b3a9dedb5912db7a53e9
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document is classified as malicious, likely a phishing attempt, due to its embedded links. Several heuristics indicate that the PDF contains a link farm pointing to compromised CMS upload storage, with one specific URL identified as http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f702bc884---35705303865.pdf. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the overall structure and heuristic firings strongly suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9332

Heuristics 4

  • 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.
  • 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://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/b1711345b8983a5feea09b6cac354613/kivorozevakozapoduw.pdf
    • http://amandatravel.com/userfiles/file/silimevajikakifokigoguxa.pdf
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608321baa0659---7156292620.pdf
    • https://grupo-kayros.com/userfiles/file/folabefoje.pdf
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16091554556029---jarobena.pdf
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087d0c4a600c---wowil.pdf
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad2ea2a2b9---77680203654.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f702bc884---35705303865.pdf
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc7dc2b966---majufojajasafejinulu.pdf
    • http://asianaccounting.com/admin/fckeditor/userfiles/file/wilibevuxubu.pdf
    • http://krevue.cz/UserFiles/File/vemugekitojaxoretarovot.pdf
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ecf430580---40370135203.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609092b070fa6---4481372978.pdf
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160a355cb6d405---13467375634.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=bearded+dragon+food+list

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