Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0beefa63460042d…

MALICIOUS

PDF

39.7 KB Created: 2021-06-29 11:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: f8cef305a86c875689ba316182112cc8 SHA-1: 39611be2706fe6a028f5266a9fc1201d67dc16d2 SHA-256: a0beefa63460042d4f5acfeaf284e9ecef2ed93aaf88c5e8a0ec8f6d13107c77
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier. It functions as a link farm, directing users to various compromised WordPress sites and other domains, likely for phishing or malware distribution. The PDF_IMAGE_LURE heuristic indicates it presents as an image to obscure clickable links, a common tactic for luring users to malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8883

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 39 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://laduses.nl/image/file/nijikipedinagejafem.pdf In PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/8279aaffa7ff2f4c7171aa0b6418c7f7/88897306808.pdfIn PDF document text
    • https://timjanen.se/anvandarbilder/53/files/suxixizitiguko.pdfIn PDF document text
    • http://accessibilite-salle-eau.com/ckfinder/userfiles/files/wolasefobotuk.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/61399567788.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/97dfff59c10697c4b776a986aaabbeba/97642653444.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/6a19ce366503ef523868c4f08a46f6f4/bozuzupavebugivike.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/04673fb70c1f86e847f779779b36398a/zezujezeto.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e37de6c847---xurirom.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608a197d0d761---zebirekuxu.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c3be9c73e---loziligovaxabubomoxeda.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/ladiwinixida.pdfIn PDF document text
    • http://ptaki.info/imgekoprojekty/files/dotoxavewoma.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/79b9710ba8ea052a7c6681d2b6b3e131/27611437561.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/56082519186.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/53d2d04d8a12b65e68a72b4bf4593822/47366737484.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/pluginsIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=learning+japanese+from+englishPDF link annotation

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