Malicious PDF — malware analysis report

Static analysis result for SHA-256 146badddd8d155c9…

MALICIOUS

PDF

52.5 KB Created: 2021-07-09 13:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 4651d7fcb2c2cd293205b8e5fba744f0 SHA-1: a232fde8b0f0a721d36c30482660f1af681caeb1 SHA-256: 146badddd8d155c9be033cb02fd31ad975a6fa9be565cfdc140d3a6cf8a5738b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to potentially compromised websites and disposable hosting. The primary purpose appears to be directing users to external resources, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

Heuristics 5

  • 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.
  • 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://philabc.ru/uplcv?utm_term=what+do+you+say+when+someone+thanks+you PDF link annotation
    • https://jamurgoreng.net/contents//files/lomapomaluf.pdfIn PDF document text
    • http://huichem.com/ckfinder/userfiles/files/wojexafed.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/malegoxiwiwigadexefuvoji.pdfIn PDF document text
    • http://constantemails.com/userfiles/file/162413020643515926057.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160717343e91cf---76272973864.pdfIn PDF document text
    • http://clinivetmadonnadirosa.eu/userfiles/files/10963298259.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c88181668dd---86424524474.pdfIn PDF document text
    • https://lesartsdansmonjardin.com/userfiles/file/20210620093430.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/1c92afeb3ab62691be14ff462e887747/jifakudu.pdfIn PDF document text
    • https://www.explosivo.gr/wp-content/plugins/super-forms/uploads/php/files/6d63c4ed351bc06462ab1a3192a51de8/39621429585.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9623cbb12b---ravenefeperetido.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/95a04d9485d89771a7ece8c2655c003c/raboxizexoxebosokovo.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/b1b948cf2610a4e9bb185e13819987a7/wijuleralakotofeb.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/6o0lonu5rajdumfnc5mrjtqfik/87006547834.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/5b10b9ce6351ae3895561340e828ff32/woxiwikinadepatu.pdfIn PDF document text
    • http://birnagarcollege.in/userfiles/file/voteloripomu.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/buminevav.pdfIn PDF document text
    • http://avandcie-energy.com/ckfinder/userfiles/files/bekanunaba.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/0e29922031f59036e25d8c726525c1e5/57451756178.pdfIn PDF document text
    • http://schroniskoorzechowce.pl/ckfinder/userfiles/files/fozupixejewixaras.pdfIn PDF document text
    • https://posaonakosovu.com/ckfinder/userfiles/files/xodegepumubupefi.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/67addbece4bd95106284f52924df8f06/35828248793.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a15012079e4---muweg.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d117b3bc23---bovebunimukazukixem.pdfIn PDF document text
    • http://luxmeterthai.com/ckfinder/userfiles/files/25681395050.pdfIn PDF document text

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