Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ccfb29a0d83ba5…

MALICIOUS

PDF

56.8 KB Created: 2021-08-19 06:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5f04420869e533eb6e8d549b1261332a SHA-1: 218d1d0370be583d3786a2f6305723138a55d4dd SHA-256: d9ccfb29a0d83ba5f581c36cc47ae2ee7db4569c930e8ad0e7101e35a03da506
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code or redirecting users. The presence of multiple external URIs, many pointing to compromised CMS upload directories or disposable hosting, indicates a link farm designed to obscure the ultimate destination. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7719

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://aronabritcan.com/userfiles/file/nelusilewokebip.pdf
    • http://abnicum.com/files/file/53410826108.pdf
    • http://colantuono.it/userfiles/files/38106950260.pdf
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076aa1d95464---4891190131.pdf
    • http://bong-dem-long.org/upload/editor/files/20668002307.pdf
    • http://olynskiconstruction.com/pics/file/zujefefaweroberube.pdf
    • https://essaidafm.com/uploads/FCK_files/file/26175127491.pdf
    • http://marasintl.com/public/ckfinderuploads/files/jukagobap.pdf
    • http://imcborivali.org/userfiles/file/welewolifusiwu.pdf
    • https://aiaciran.org/cache/fck_files/file/modibopokazefad.pdf
    • http://artpolinakuzina.ru/pict/file/detujezila.pdf
    • https://altonika.pro/files/fck/file/domipijalani.pdf
    • https://www.southdownscellars.co.uk/ckfinder/userfiles/files/82569765189.pdf
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804970e6699---tavupavibabazu.pdf
    • http://xingyeknitting.com/userfiles/files/58153032343.pdf
    • http://danburyhighclassof1961.com/clients/b/b4/b42d7d7907ff1a67dd6fd366dd3c6775/File/51594004725.pdf
    • https://intersat.lv/files/file/75530388683.pdf
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e3d416575---8234612820.pdf
    • http://zcapitalcrm.com/app/webroot/uploads/files/dogitibuwofopabimiwutomed.pdf
    • http://www.ecostroyservis.ru/File/zedusadenolanudawini.pdf
    • https://bmw-zona.ru/uploads/file/suzolufinanolazoma.pdf
    • http://aviatechinform.ru/sadm_files/37949676682.pdf
    • http://gold-carsales.com/js/upload/files/84009697984.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/79c8fbfecc2d1c0b0e1a81c748928e0d/wijefadewawusobaxogem.pdf
    • https://pezenasenchantee.fr/userfiles/file/66961897135.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=nicene+creed+text+methodist

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