Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cabfb66ceb0e23f…

MALICIOUS

PDF

62.8 KB Created: 2021-07-22 23:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 28f632560802d2a98f58b432bdd79793 SHA-1: dfe6ea14e0033a3159622eedc3f05c87793d9e4b SHA-256: 6cabfb66ceb0e23f9509c3d34eaacddfc6b67e1349a313b19f62aeb25a1d4f90
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The presence of these links suggests an attempt to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9614

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://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/b76c5151bcb391c139fed04690e32ca6/mibipabigu.pdf In PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607edb05ede24---43617870524.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/rokifusebuwivepakij.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebee0b21cf---wijebebulikavemigetifo.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec5124d49f6---nalojom.pdfIn PDF document text
    • http://dagmar-e.de/userfiles/file/99426576129.pdfIn PDF document text
    • http://pastadimatteo.com/ckfinder/userfiles/files/ruluropemefijotedemidisan.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/debakerisipanir.pdfIn PDF document text
    • http://klpa.net/userData/board/file/74203374755.pdfIn PDF document text
    • http://cocoal.com/uploads/file/zexozuxofiresozikakip.pdfIn PDF document text
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160940713b7844---45472373478.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b39a9fb9e7d---dakeminilejawip.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608edf53e98f7---wetapopev.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/2ac8ff7d6dc75600fe7d774240ff3634/kodagazosog.pdfIn PDF document text
    • https://pablohernandes.com/wp-content/plugins/super-forms/uploads/php/files/b4137efe2ef1f229c7257780b1b0231d/kisomekuwazotojoxomanow.pdfIn PDF document text
    • http://aitrans.org/UploadFile/file/F1202106242344511471.pdfIn PDF document text
    • https://remoteworkerclub.com/wp-content/plugins/super-forms/uploads/php/files/096c593ec377ab7d4da55c464e99ee9f/beribidejar.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/revedovixemubaluvof.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/94619379539.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/adb2d0e44faf6b3c2d4f8f983af18538/doxunus.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c19d284173e---nerigedad.pdfIn PDF document text
    • http://royalwedding.jp/images/blog//file/92074926782.pdfIn PDF document text
    • https://deltarents.com/upload/ckfinder/files/gokisajaz.pdfIn PDF document text
    • http://avs-market.ru/admin/ckfinder/userfiles/files/mibuzigozinas.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/ij9dm18o406fuidbk2ov0ubf30/68880930402.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=are+not+in+spanishPDF link annotation

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