Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae24f14e8e6802c4…

MALICIOUS

PDF

87.4 KB Created: 2021-07-13 04:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 85f2974236b8f27c4294f8ee14f9fd54 SHA-1: 2c09933678814a6113d71feba037f39e01fdfda8 SHA-256: ae24f14e8e6802c40580cca0999b9c41ba80e2ef188a3e1bef9bafec31c3e981
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to compromised WordPress sites or other potentially untrustworthy domains. The ML classifier also flagged this PDF as malicious. The primary attack pattern observed is the use of a link farm to direct users to external, potentially malicious content, which is often a precursor to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6701

Heuristics 4

  • 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://mokhalasati.com/userfiles/files/kewupolifipexuvuvoxi.pdf In PDF document text
    • http://ciccioinpentola.com/userfiles/files/71789810937.pdfIn PDF document text
    • https://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/789ba524cbeb28cc4267b4c816200c5b/welevezulezu.pdfIn PDF document text
    • https://ms01bet.net/contents//files/gixowemazesifinodigume.pdfIn PDF document text
    • http://autowagon.it/userfiles/files/fazinekojoruvi.pdfIn PDF document text
    • https://oddluzanie.net/userfiles/file/vapafe.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fca1841e7---49686859358.pdfIn PDF document text
    • http://brmhn.com/userfiles/file/20210630083026_b74vyg.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/vinerasar.pdfIn PDF document text
    • https://mytalk7.com/_UploadFile/Images/file/32102583355.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160839d3f208b3---tarubukosigobuxagorome.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e6ea0ff87---pomomojevesapudujiguzoxo.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/mg5so8lpv4hq8d77aupo3hdiae/35038914051.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/f8eb69cb39a88fd88e7d214c5cc2fbee/raxalopa.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/0f772qtk0o2c9s7s7jg0ljsjnf/55931645123.pdfIn PDF document text
    • http://techsystem.gr/data/uploads/ckeditor/files/xekab.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/89f2a252459a6b54fa6e2d91b72ec61b/wilepidirofilo.pdfIn PDF document text
    • http://autofulltravel.com/userfiles/files/metati.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a93de63e48b---84467950837.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7366115211---6926744629.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=panic+by+lauren+oliver+summaryPDF link annotation

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