Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b0caf194bf3d92…

MALICIOUS

PDF

59.9 KB Created: 2021-08-03 02:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 061e6c376870ca9f9eabe78bce61f6c5 SHA-1: a94295fa9ea18211299f78c90624acaf3766d00c SHA-256: d2b0caf194bf3d92cd93bbdfe4e248ba5e2c74495072ee6e3367567d1cafb372
154 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing trojan. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads, likely to host further malicious content or redirect users to phishing sites. The PDF structure and embedded links suggest an attempt to lure users into clicking through to potentially harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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 http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608226cae2e76---76749455428.pdf In PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160d256eb38abd---bopixedijexubas.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f55fb1af4---tawodotesulefot.pdfIn PDF document text
    • http://ventexevent.se/uploads/file/84502834149.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/mpddcu1vt29onms6gpfb6cdr93/51899768968.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cbb387a1cde---xilebozutodapowipav.pdfIn PDF document text
    • http://thaide.org/userfiles/file/83484094128.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1320ahf4226rnpb3qi717b3tm0/90577711737.pdfIn PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/2707452953.pdfIn PDF document text
    • http://stevis.cz/files/file/27479719180.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8fdb2d6c53---zafofomupavobufigekome.pdfIn PDF document text
    • http://artospace.com/pics/file/86763896754.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/8i8011b8m4d19end3r3tdji25l/notikupogoxapoge.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/diwerezalubujavinumasodof.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160717a348920d---karolowox.pdfIn PDF document text
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/9a6f59bb4ee2ea40d9734b17e6c84a78/38347379231.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/19887017351.pdfIn PDF document text
    • https://smallislandcurry.com/wp-content/plugins/super-forms/uploads/php/files/8b5d99b3d80ae510ad8f94273712a5b2/64560740037.pdfIn PDF document text
    • http://gemculture.com/userfiles/file/90691460169.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a016ca38a7f---53381796557.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aadc93ecfb5---linalonalomawido.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=the+managerial+decision+making+process+harrison+pdfPDF link annotation

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