Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab54e5d421aaeef…

MALICIOUS

PDF

60.9 KB Created: 2021-05-21 04:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95e6eee154a171689dc6b5c53ad5d6dd SHA-1: 2bc50ef7fee009aa6668af5d0a7bb3c89e915d11 SHA-256: 3ab54e5d421aaeef5e4628db1c98933cb3d94ee1bcbbff19d3312332ea894e8c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains text related to 'Setup android without google account', likely a lure to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6200

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 https://irlanc.ru/uplcv?utm_term=setup+android+without+google+account
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/951e53eae1558ddc9e94bbcd73e84eae/66076567944.pdf
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/72a47e90a18656f47880cd0f6b8f1225/22129138268.pdf
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/85acc1116c413613cc6f4d4568555b73/wapobokujejoxu.pdf
    • http://www.celso.org/download/55378771835.pdf
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6f4fb1b84---limafag.pdf
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c763c8da67---16563898541.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/ab8ddecfbe131a7bc1af1ae7af442ff7/rivotatujuzuwulafasa.pdf
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/blbuibdv0i1s7a8553rv58cihh/32520051025.pdf
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/dkr7jco755avogvbtnaqoopkqe/15339989772.pdf
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/2hmdu5cpcmsev44019blrltcn3/13541868566.pdf
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/ca571404734c94027b2a5ce19560b857/dopezoda.pdf
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1608461158bdb0---tejuzuwileledew.pdf