Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2365e39b623e74…

MALICIOUS

PDF

57.0 KB Created: 2021-08-01 00:17:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 61bc80925cee1d5723e337de616004c8 SHA-1: f2c40a221bf3d505bebe2351c49cf38896b71a38 SHA-256: 3d2365e39b623e7431fac6a0b0674d87141c46c5f447eec3fbd535ebad415514
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a link farm pointing to compromised WordPress upload directories and other disposable hosting, suggesting an attempt to distribute malicious content or phish users. The presence of embedded URLs and the ML classifier's output further support a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7435

Heuristics 5

  • 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.
  • 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://yucekalipmakina.com/tsrm1/img/userfiles/file/35110721755.pdf In PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b78badce75f---30989183985.pdfIn PDF document text
    • https://luminex.pl/upload/file/nisugixotapafilerato.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160771ddc2dc50---11154841969.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b6dd10d3a---72141173635.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608570b63851b---zujesusenoxezalaz.pdfIn PDF document text
    • http://geniuschulatutor.com/userfiles/files/86096658295.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16083a2bbad9ae---jabepegiduzo.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/4ksc4p89q2nu57an5d6ng619np/xizuxizasopufisotogomu.pdfIn PDF document text
    • http://drukarnia-skawina.pl/app/webroot/media/files/xebafigumotofubilavabo.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cc4fde54cf1---xakiwogozibavisorig.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160fb497d29020---63013501830.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/26bdd0bdf47dde1485797ee3725276c9/22041551527.pdfIn PDF document text
    • http://bioaec.com/userfiles/files/powofelenamafawu.pdfIn PDF document text
    • https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/kd9k0pn91dp3v1lpj8f26193rf/76658475375.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/nogexogixamapanoxapawutu.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b3aa22050---fizanapunulupovi.pdfIn PDF document text
    • http://christopherdallo.com/file/9497437010.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/11933178592.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ec31cef9f---93308508159.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=8+ball+pool+hack+android+without+human+verificationPDF link annotation

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