Malicious PDF — malware analysis report

Static analysis result for SHA-256 89627ad832d2aba6…

MALICIOUS

PDF

54.6 KB Created: 2021-09-16 17:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 7dc68638c509e1c89a562ce51f7bc892 SHA-1: c428ab14c6007fc9ee0a4dd0f45e2bb6546a86c0 SHA-256: 89627ad832d2aba61f4a7a54ed4a9682845c46ac02cd3dde799a7b6ea21f1087
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for delivering malicious payloads. The heuristics indicate that the PDF acts as a link farm, pointing to compromised WordPress upload storage and disposable hosting, suggesting it's designed to host and distribute malware. The embedded JavaScript likely downloads and executes a second-stage payload from one of the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

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 http://terredellamagnagrecia.com/userfiles/files/lusufexumowakaju.pdf In PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614203532afcf---xukekodakakebolipovaz.pdfIn PDF document text
    • http://foto-recepty.sk/images/fotky/nowajug.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/74445229468.pdfIn PDF document text
    • http://tdvvietnam.vn/webroot/img/files/28648284728.pdfIn PDF document text
    • http://bajajsports.com/userfiles/file/namotujarel.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/581ea30508db4ea220f37f137f67bdf8/37403595867.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/xipik.pdfIn PDF document text
    • https://www.allduniv.ac.in/ckfinder/userfiles/files/vesof.pdfIn PDF document text
    • https://keiba-like.biz/js/ckfinder/userfiles/files/tolidotirozositorulibax.pdfIn PDF document text
    • https://tefen67.com/userfiles/files/makesiniz.pdfIn PDF document text
    • http://bitree.net/ckfinder/userfiles/files/61594758057.pdfIn PDF document text
    • http://ohadalegistrocbarter.com/ckeditor/uploads/files/69999510087.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/87676903894.pdfIn PDF document text
    • http://ugyvednok.hu/userfiles/file/zatezajazabaruxid.pdfIn PDF document text
    • https://tckontrola.hr/files/5032637961.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/getusafogal.pdfIn PDF document text
    • https://leifs-auto.dk/images/file/mixinosodesununinemedim.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136db20b0771---jamifowepusuvajazedosatoz.pdfIn PDF document text
    • http://centrons.com/uploaded/file/30622707861343a4384679.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/nivokifupesinividezetum.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137f3a882da9---xubedotaw.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/62fd1a7ccf0ff8ac189950edac8a86a0/kabexovomojifusisedojek.pdfIn PDF document text
    • http://architettotamborra.eu/userfiles/files/97554025247.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=wallpaper+hd+android+anime+one+piecePDF link annotation

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