Malicious PDF — malware analysis report

Static analysis result for SHA-256 d21d747e00db40d1…

MALICIOUS

PDF

62.3 KB Created: 2021-09-03 18:33:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c22f4a874cd9ebb46dfb890e8b33e209 SHA-1: de91c5eb366b2816d8a570f59298d33e88209878 SHA-256: d21d747e00db40d138cb3858df2bc4ea6769b0b9971e6cc185958b878179c4e4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and flagged by an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress uploads and other disposable hosting sites. The primary purpose appears to be directing users to malicious or phishing content hosted on these compromised domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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 http://highlandcougars83.com/clients/2/26/268573c5102cd00412bac87cee9346ec/File/22308090478.pdf In PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/c3fa6f69f8c14461ba60d44fc7ef951a/tevagudegevisefage.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/353914b278e3809e70116daf7939dc6c/21487201228.pdfIn PDF document text
    • https://jmtours.co/aym_image/files/62409255672.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608051d5097fd---16255159479.pdfIn PDF document text
    • http://micruts.org/userfiles/file/77833131648.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/7615017d83fc06a98c608f7dda182f66/ragozakilusejozo.pdfIn PDF document text
    • http://unseenadventure.com/userfiles/file/26939450319.pdfIn PDF document text
    • http://dentalclinicbangalore.com/uploads/69624728503.pdfIn PDF document text
    • http://fotossc.pl/_files/file/84482622996.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f99672542---sunegofabigulabepul.pdfIn PDF document text
    • http://www.kingsmen-cmti.com/upload/files/wixutilamigajoxe.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16076c3238cddf---33061836693.pdfIn PDF document text
    • http://kbfrutos.sk/images/_file/25980426225.pdfIn PDF document text
    • http://tai-group.com/upload/files/kaxogiga.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607accae32d54---pinunef.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/9aa6e1e90a97426272671df80a02452b/zazibujedotenugidesur.pdfIn PDF document text
    • https://narimasu-chintai.net/jcfiles/file/7322081542.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bd774926f64---18481092244.pdfIn PDF document text
    • https://losungversorger.com/product/file/somejuwinutigewukigufige.pdfIn PDF document text
    • https://on-call-anatomist.org/ckfinder/userfiles/files/tesupuv.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/91b68a1e47dd1ac73b2b6827a6aa926b/5212178970.pdfIn PDF document text
    • http://laiksmodalux.lt/app/webroot/uploads/userfiles/files/nutudoreratilodipol.pdfIn PDF document text
    • https://hostingalani.com/calisma2/files/uploads/95671724194.pdfIn PDF document text
    • http://topas.lt/userfiles/file/pexobozafid.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=gcse+business+studies+past+papers+pdfPDF link annotation

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