Malicious PDF — malware analysis report

Static analysis result for SHA-256 8677f73dc3572685…

MALICIOUS

PDF

66.6 KB Created: 2021-06-17 11:41:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 835edfcd2dbdd7a573fb3767c317c371 SHA-1: a06966a9fece5df5c5807ce08f0afc10146dddb8 SHA-256: 8677f73dc3572685e6c3e7d802336ee5e7a13d0de2f28fed7143c669dbc926d5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs, such as 'https://nomylo.ru/uplcv?utm_term=a+walk+to+remember+full+movie+with+english+subtitles', are used as lures to entice users to click through to potentially harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7441

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://nomylo.ru/uplcv?utm_term=a+walk+to+remember+full+movie+with+english+subtitles PDF link annotation
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070c77157d23---73559363911.pdfIn PDF document text
    • http://schodylux.pl/userfiles/file/68488403293.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/817925a3f26fa3dca20fd4a3bc15eba1/lazufokafodine.pdfIn PDF document text
    • https://bamfieldrental.com/userfiles/file/53259932810.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/vl6vqmubu5gjl58l928cn7luai/guvamomemipuk.pdfIn PDF document text
    • https://signika.pl/Upload/file/98623571730.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607992ceba539---66852497077.pdfIn PDF document text
    • http://macautemple.com/userfiles/file/90855056458.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-6-10/20210610192026499131.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c668a0306ea---zuxepuwozajirova.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/ssq1npo01n1rvq6stg4f81poi7/guzipagesarukes.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/4588e2c629e1c49bdc4acbed4a034f9e/18139938327.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c65fb1ee390---fidivaxunudamolev.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16074574da90b3---20033863678.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/39bcd522fb9d19ddf3f1ee3ca0efb026/91374142409.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/3f53a11fd6c7fe43d08a9ed7dcc11945/rulaxagasasawekife.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/cdbadaf92b04e1f1fa6cd9fe9c305a1d/84387838763.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/ea44d7df76782dd0e8db562090e8c816/vuwevaruxuvedukab.pdfIn PDF document text

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