Malicious PDF — malware analysis report

Static analysis result for SHA-256 b960f9d189b4d247…

MALICIOUS

PDF

58.6 KB Created: 2021-09-03 23:37:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 4a1beb9522a3b0d7a167ec4340d85ce7 SHA-1: 25791f9f66ecae09f4f1d8d351063dbf406dc4da SHA-256: b960f9d189b4d24758618246b70e8755d5f86e2f73cb04a49111029fd4bd113b
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites. These links likely serve as a lure to redirect users to malicious or phishing content. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7719

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 https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/1f08a9563df09e3d357cce0c0f02f53e/gotazoxiwaxategexisakanal.pdf In PDF document text
    • http://arcadia1973reunion.com/clients/3/33/33cb7023d77084166ed027ca16b579b7/File/fugiritevog.pdfIn PDF document text
    • http://www.hz-kontejnery.cz/ckfinder/userfiles/files/48279355813.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec4afc29f25---37097622756.pdfIn PDF document text
    • http://folientastaturen.pl/_data/file/gedalawagaju.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/62ffcdb1657678399d96ff1aa2425678/zewuzivatujonepulas.pdfIn PDF document text
    • http://jaatkinson.com/userimages/76811376398.pdfIn PDF document text
    • http://popeyebio.com/upload/files/21869067184.pdfIn PDF document text
    • http://ptairsupply.com/userfiles/file/tapefetomagova.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607994259ddfa---51369738784.pdfIn PDF document text
    • http://duszek-lasu.pl/userfiles/file/tufokelefewetilerozinosa.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160712599c5a69---fukuxedalagij.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/79f5d266f5548aec410bb6969ff5a1dc/64411186100.pdfIn PDF document text
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/fe90518d93598b1a5049d47eab3fa4dc/38301963801.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/hjphtb0clsk3e4f1judf850qtd/jelupimexelab.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/ffd3a7494f6edabbb6ada471705e3c6d/dakixeketi.pdfIn PDF document text
    • http://lhdrum.com/User_File/UpFile/file/20210731044530_NzE3ODY5NTc5MDU=.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/b3ddb95fcddb900c31d8b6f161163b90/legula.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/27c428a3eb28822dffde9d1420c09552/33888516464.pdfIn PDF document text
    • http://babyshelter.net/assets/upload/files/25220558333.pdfIn PDF document text
    • http://kaizousha.com/js/upload/files/63353077782.pdfIn PDF document text
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/8aa2b427b27caac5341545d527cb6910/gezibo.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160785a9dcaa93---totufa.pdfIn PDF document text
    • http://emaaravm.net/upload/files/zaboje.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/96pnet4conjjiqb2nh1klls49i/lunififesanigezapog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=woodrow+wilson+the+study+of+administration+pdfPDF link annotation

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