Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2871af44e098b6…

MALICIOUS

PDF

70.3 KB Created: 2021-09-02 18:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: eedd60b2b9c7ffee092f2a48530e5003 SHA-1: 6b04d1bc3d7e8267b9d7b5be25e11baed47f3c29 SHA-256: dc2871af44e098b69feb38c7dd79e1260d32d3cde8f11068ebe17fc48ba4aada
140 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, identified by heuristics as 'PDF_JAVASCRIPT' and 'PDF_JS'. This script is likely responsible for redirecting the user to external URLs, as indicated by the numerous PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM firings. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely phishing or malware delivery via the linked URLs.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4988

Heuristics 7

  • 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.
  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5e4388868---35514609622.pdf In PDF document text
    • http://ncfc.com.tr/ckfinder/userfiles/files/16835270122.pdfIn PDF document text
    • http://aylabawadi.ae/userfiles/file/7109959212.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/iu0317l730vb470nmlb2pfk4a7/gaxil.pdfIn PDF document text
    • https://agermag.ro/mm/file/xirapexumejazali.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4cdb99e727---82557458828.pdfIn PDF document text
    • https://ostrichpharmaceuticals.com/userfiles/file/wisuniwurad.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfcc2951e11---netovetaziwewemeduzin.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/8cc4010c7655bbe55be235fb34ac4b0c/90296682752.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/51321538362.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f41dd98d90---62316782272.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fcc229351e5---93697318725.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/7fb0e3272146e47ec3fb3b1359fde249/tejagusux.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b27f208f5f7---79853951780.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2b755df27---55820378419.pdfIn PDF document text
    • http://turatabor.hu/media/tiwexesenoloba.pdfIn PDF document text
    • https://sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/gefuwonazitaxa.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160beb7c331963---lesozaluwitoxemajemovogid.pdfIn PDF document text
    • http://sevenseahotel.com/uploads/images/files/22776354120.pdfIn PDF document text
    • https://dancleland.com/img/upload/file/4789375755.pdfIn PDF document text
    • http://obasekiestates.com/UserFiles/file/gebunoxu.pdfIn PDF document text
    • http://fundacjaproartis.pl/javascript/ckfinder/userfiles/files/liroxakifofazuxojada.pdfIn PDF document text
    • http://cuacuondaiphuc.com/upload/files/xajawogowefof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=machine+embroidery+stitches+pdfPDF link annotation

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