Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e37ee3a833f8337…

MALICIOUS

PDF

43.0 KB Created: 2021-09-04 12:34:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9e379736d17707224e9c48db9d6ec175 SHA-1: ca07b8ebe04668df689619371e57b3dbf79111f5 SHA-256: 9e37ee3a833f833782077ef8334b32307e1ca032da8604c5cd3fe1f94e72744e
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting an attempt to redirect users to malicious content. The document body is heavily obfuscated, but the presence of PDF-specific heuristics indicates it's designed to exploit user interaction, likely through a screenshot lure, to lead them to external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://driscollandgibson.com/images/edit_images/file/dajuzawetedus.pdf In PDF document text
    • http://yejida.com/userfiles/file/484212604.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/98255386398.pdfIn PDF document text
    • https://thepainter.asia/upload/files/fezonufar.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/vaxojeg.pdfIn PDF document text
    • https://jhservice.net/imagenes/galeria/files/zoxaxo.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/48117541630.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/dixolag.pdfIn PDF document text
    • http://aktien-analyse.de/images/File/88338692356.pdfIn PDF document text
    • http://borik.customreal.sk/data/files/21443671332.pdfIn PDF document text
    • http://dnepropress.net/files/file/fubiweke.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088db2517d24---97918492427.pdfIn PDF document text
    • http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202105011856451065.pdfIn PDF document text
    • http://poltinik.ru/userfiles/file/20733933529.pdfIn PDF document text
    • https://chetanaus.org/bheru/uploadfiles/file/33065028652.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/a9cbf6c6331ac6bb6b428a954a7560d9/53001407343.pdfIn PDF document text
    • https://shiokerbau1.com/contents//files/66032526610.pdfIn PDF document text
    • https://www.koreayokogawa.com/ckfinder/userfiles/files/judurar.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160859d4dd4d98---vilatazuxukozito.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bc220c1c9ef---27898726976.pdfIn PDF document text
    • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/gedipefasefarokel.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/eadedb0f427c321595bbbd04fbc49eee/kusupadetapolekezojunoxev.pdfIn PDF document text
    • http://santamariamikado.com/uploads/files/lepesorepidowoxopipox.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa13abab53---53599944484.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/dc54b0fe352d55078fd1b3531a104236/lokomazi.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/e0cb8a6794373eb8abdffebd1ae831f5/jifisemimevufedewutita.pdfIn PDF document text
    • http://perlawarmii.pl/userfiles/file/49997600673.pdfIn PDF document text
    • http://iworking.vn/uploads/files/86170418859.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=importance+of+studying+history+pdfPDF link annotation