Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fba6b62f22c51b9…

MALICIOUS

PDF

48.8 KB Created: 2021-06-04 21:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50f7fdf16ca1b3e883997365687d2ece SHA-1: 0aeaeb8c8b6f2670f441a062895381efe4b070f3 SHA-256: 6fba6b62f22c51b98550e00a26620965d5314add91c0ee4f8114b0c48e8311eb
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. It contains a screenshot disguised as a document, with embedded links pointing to various external domains, likely intended to redirect users to malicious sites for credential harvesting or further payload delivery. No scripts were extracted, but the presence of numerous external links suggests an attempt to lead the user to a compromised or attacker-controlled resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7192

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 48 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://irlanc.ru/uplcv?utm_term=converti+un+pdf+in+word+gratis
    • http://megat.pl/uploaded/fck_files/file/zizap.pdf
    • http://gtshotel.it/images/file/nokud.pdf
    • http://www.alex-vasilkov.ru/images/wisdom/file/sunodesupivisobe.pdf
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/a9fbb9024abde49c199d82dd7df7f7df/dapurijegiladivonifi.pdf
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609e761b5dfe0---30196844327.pdf
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/873ec37519bc6f45dd0afaf1308ba62d/wosibal.pdf
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/222tgj2g0lfl8vdrgcnkrr2k1c/91688584006.pdf
    • https://alkalacarservice.com/public_html/userfiles/file/62301500539.pdf
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/f2l3a3c1m160r6ituutrga36p6/gilotinatekebojipaxobib.pdf
    • http://accessiblevehicleservices.com/userfiles/file/niluretitaw.pdf
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/b30187995d11e129a0b57f497e552674/tiwujopefipulu.pdf
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/ghje50rtvt9mtu9ivkdu3sl164/23369708894.pdf
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a653ed08f8d---99181119472.pdf
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/160707d39761bc---3343842661.pdf
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/c7a5dd560c6ecf9a1dd565be66f11683/2461240656.pdf
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5c666b76a---71082925331.pdf
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/015a7c02f89302a918f888c80fa3987c/kokukosaworo.pdf
    • https://muratay.nl/userfiles/file/46238804382.pdf
    • http://szao-spb.ru/images/news/file/kemipolefijobojumiwu.pdf

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