Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05a72301a01c914…

MALICIOUS

PDF

52.1 KB Created: 2021-07-16 12:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: ae763aa2890e3ca250df46cb57e52997 SHA-1: c1a0394fc285bbb542697fec5c6503bc59d833df SHA-256: f05a72301a01c91404fee81893b1693d6d2c1e6f91f9966050f33411bea0fe6c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, directing users to multiple potentially compromised websites, including one hosted on a compromised CMS upload directory. The presence of numerous unknown URLs suggests an attempt to distribute malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

Heuristics 5

  • 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.
  • 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://barcelonasixtytwo.com/userfiles/file/57747923157.pdf In PDF document text
    • https://nestaerospace.com/uploads/file/86668462047.pdfIn PDF document text
    • http://wecans.net/_UploadFile/Images/file/8883111357.pdfIn PDF document text
    • http://kosmonautika.ee/ckfinder/userfiles/files/65027231306.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/51687685085.pdfIn PDF document text
    • https://heks-tech.com/app/webroot/userfiles/files/zuvoloke.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a3e1045cc---57517073526.pdfIn PDF document text
    • http://busankid.com/webfiles/board/file///87933342932.pdfIn PDF document text
    • http://glenbrooksouth1970.com/clients/1/17/17fc1bd13d5538a69f39d58c869d2fc5/File/gulorexo.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/3649c9dccbeae62319683667be6c9898/57630547028.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079efb26c35e---bugora.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a4bbe73c6---tipomurofi.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/d32a3rkih91e9f2mdss6u5v522/10731357369.pdfIn PDF document text
    • http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0d007bfff---nebabemaf.pdfIn PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/94cc7e14aa85ba7c47df6548af40d5b8/wefugugozolap.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/3953382808.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/8db9c26dae76be8923c0de46452e6ae9/guxowizexenidubirezune.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/dc9c6e9910550119fe01944b693d003c/40268334660.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6e4473050---25535552232.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/mebowofekazubotuwe.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160872d6258922---ruwowosawavopilofol.pdfIn PDF document text
    • http://studioassociatoemc.com/userfiles/files/79851782451.pdfIn PDF document text
    • https://foulardfotografando.it/file/zonaliwofipun.pdfIn PDF document text
    • http://artkulinaria.pl/sites/default/files/file/nileset.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=what+is+the+author%27s+purpose+for+writing+the+text+about+rhinosPDF link annotation

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