Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e7c3274f912df1…

MALICIOUS

PDF

62.3 KB Created: 2021-06-18 06:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a7a767cfc3546542cfbb9485678a3354 SHA-1: eec7dc0728d467b25a834012873265a057dc4466 SHA-256: b9e7c3274f912df16d404deab9dfadab339091332ca54919ba07e5e129500608
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body references 'Minecraft trial hack version' and the heuristics reveal it functions as a link farm, pointing to multiple potentially compromised WordPress sites. These links likely serve as a lure for phishing or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9384

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 http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/3unbrb56j1iqj9cf5ui7fa9rn7/78781409760.pdf In PDF document text
    • http://www.biotanika.pl/upload/file/13308701085.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/a70a43783b17a0b981fb5819db045fa5/fagomopije.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/60383176774.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd0e19025d---34863384225.pdfIn PDF document text
    • https://vicotelecom.vn/static/source/images/file/gamemefusox.pdfIn PDF document text
    • http://kangs78.com/clients/66216/File/19627621974.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1e5d934df---72565774408.pdfIn PDF document text
    • http://sillajen.com/fckeditor/_upload/file/naremodiruvozagofaxoxisud.pdfIn PDF document text
    • http://myqself.com/upload/files/75443758995.pdfIn PDF document text
    • http://bukhatirhomes.com/userfiles/file/56511438702.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609880655a69a---lamulitase.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16073737967b13---janorakevemelobugizovakek.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/09ed07c25740cfc175904bad25998d0d/51172112537.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=minecraft+trial+hack+versionPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD3B 5096 bytes
SHA-256: 646111f8fe03f4d92e0bd22e0ef50283bb350c6ec462daa5cd0aa37d5fbea317
font_01_sfnt_off0000cea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA0 10640 bytes
SHA-256: 0eb57d194c39c2337b12d7a6fa308badc5f6d96cebffb887fdcd2275e987a2fd

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