Malicious PDF — malware analysis report

Static analysis result for SHA-256 425c26f08540bbe9…

MALICIOUS

PDF

62.4 KB Created: 2021-08-05 17:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c7feaba1aaf242e3bc71c02a4053b364 SHA-1: eb60004f76e5860a4316c3a88188d7380515cfc5 SHA-256: 425c26f08540bbe9a763851b742037a123e6d177b8c4ce2780059248aec55aa1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many pointing to websites hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8900

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://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/e7e9db5d4c8d1a94990934fe04c0e294/28179073786.pdf In PDF document text
    • http://kadh.kr/bobod/upload/file/90573163830.pdfIn PDF document text
    • http://3e-recycling.ru/app/webroot/filesfiles/61192420139.pdfIn PDF document text
    • http://www.firengo.com/userfiles/files/59006480564.pdfIn PDF document text
    • https://elearning-chemistry.ro/userfiles/file/nomaduzikexideximafux.pdfIn PDF document text
    • http://ventmetal.ru/userfiles/files/kadapisuxujelelolirifitaj.pdfIn PDF document text
    • https://www.southdownscellars.co.uk/ckfinder/userfiles/files/95953142974.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dab7366ecd1---navil.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/6888f8c767d7bc5a514f0bccea873891/wutimunokamisatekodo.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc301bd9c7---zekifajerok.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef90270213---jobixomovutu.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a2fe122a0c9---91900954937.pdfIn PDF document text
    • http://amirafouad.com/uploaded_files/file/56694603947.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/1a63e4ce91d83b7151c346b020dbfc08/13236531026.pdfIn PDF document text
    • http://bigxra.com/uploadfile/file/2021052020340673499.pdfIn PDF document text
    • https://digireg.se/upload/xuvobugogizovimefajokume.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/54316399654.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/875d4890e87f382a8e374b3cc9bd4344/satefidukojipuxan.pdfIn PDF document text
    • http://helloshoppingnepal.com/userfiles/file/remorisebudilolamez.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/64271859598.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160703c9b60815---97759986355.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/24npnvburv008c7irvstrr26t6/56959328493.pdfIn PDF document text
    • http://dvg.asia/ckfinder/uploadfiles/files/51282707487.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/8952783224.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/df84f048d8b1c79793fc9d481f23251c/felugekazevivotizinefow.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=hp+laserjet+p3015+parts+listPDF link annotation

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