Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0ede2e3cb20ceb…

MALICIOUS

PDF

51.6 KB Created: 2021-06-07 08:15:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2c2b613aee26fc61bfe70a6e82d3f848 SHA-1: fcecbdf15d20596aa687d056746800a630e5f671 SHA-256: 2b0ede2e3cb20cebc2bcb48dd2be01df7b30ab3f6cfd7a081e10bf0ac49d3356
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous links, many hosted on compromised WordPress sites, designed to redirect users to potentially malicious content. The document body, though heavily obfuscated, suggests a theme related to 'keyboard books for beginners pdf', likely a pretext to disguise the malicious intent. No scripts were extracted, but the presence of external URIs and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7590

Heuristics 5

  • 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.
  • 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://chcial.ru/uplcv?utm_term=keyboard+books+for+beginners+pdf PDF link annotation
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/8109c3e694019c00c6c7f117ba145365/7120339690.pdfIn PDF document text
    • http://bmhs1963.com/clients/7/72/7286fd37811b7a5dece6e69924e4d5ab/File/renumivereduko.pdfIn PDF document text
    • https://cecprint.com/images/file/15395328543.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/d8b1405565e6ac6083bbd6348d528174/mogopoviteliwulip.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7aa8714f8---luxukoxasipekinu.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073fc6751ea9---25697948679.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/38ceb789317a333dce8696de3ed14443/kevoleme.pdfIn PDF document text
    • https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd60ba0d79---pizupinibilozatunawa.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608054c6309fd---74208608988.pdfIn PDF document text
    • http://swadeministries.com/pastor-sammy/upload/imagecontent/file/gewijetanup.pdfIn PDF document text
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/8r9vrsort6ia4la7vf5j7gu23d/36544970903.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af40a6a2e0d---81521188642.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef4f5ac970---96463028653.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/cdgb1vc9q5ipet0glj12p3mkfp/telabobu.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/qbed7ua5ucfv16i7ftb7abs0l0/nimotiraropokun.pdfIn PDF document text

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