Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6f72463e41a555…

MALICIOUS

PDF

62.3 KB Created: 2021-09-05 03:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: bf0ff49cb19f7da2c8c3502d49468fe1 SHA-1: 90c34de6568c3331f59dca399f51b4c74244b6ff SHA-256: aa6f72463e41a55575f6ff7fba68f991ef528b710e18036711ab1c890828db10
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1105 Ingress Tool Transfer

The PDF contains embedded JavaScript and multiple links pointing to compromised WordPress sites, indicating an attempt to distribute further malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7962

Heuristics 6

  • 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.
  • 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 http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608405d564b91---jatuxumokamifupon.pdf In PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/iuigmbqv33t3j1lqdvt0853u1f/vixidesusikuxafizixi.pdfIn PDF document text
    • https://campermagazine.tv/public/file/mivifabal.pdfIn PDF document text
    • https://gwynharmon.com/home/gwyn/public_html/ckfinder/userfiles/files/45097338917.pdfIn PDF document text
    • http://podhoru.cz/userfiles/file/jezivededuju.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1606cebaef263e---55431708874.pdfIn PDF document text
    • https://lemanssrl.it/file/59967198037.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cba1356e577---24475446214.pdfIn PDF document text
    • https://sfasg.jp/js/ckfinder/userfiles/files/97878934798.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e92ddd1818---22814156945.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb4bb5a579---30418664456.pdfIn PDF document text
    • http://haitrungkim.vn/uploads/userfiles/file/70841186134.pdfIn PDF document text
    • http://batiment-tunisie.com/userfiles/file/zajegirupapuposakilawep.pdfIn PDF document text
    • https://lion-trading.co.uk/wpIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=scinder+un+pdf+en+ligne+gratuitPDF link annotation

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