Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd0f5c373a89ceb…

MALICIOUS

PDF

63.5 KB Created: 2021-08-23 09:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: fbfb7701b9d9faf15fe82ed955f591f9 SHA-1: 2a5a7437ed54490bc685b39b2724a778dbc322ab SHA-256: 7dd0f5c373a89cebfeb83d2a58a597cd4ad8210911015190634b94c7496b2f43
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to external websites hosted on potentially compromised or disposable domains, indicating a link farm designed for malicious redirection. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a common tactic for distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7390

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 https://larrialdiak.es/files/galeria/files/gazabav.pdf In PDF document text
    • https://akapacha.com/userfiles/file/32295173118.pdfIn PDF document text
    • https://xosobacninh.vn/webroot/img/files/takuzokojujonag.pdfIn PDF document text
    • http://gamebonda.com/ckupload/files/bujipete.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eceb4d87b0---bafiw.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/xevugopisusalizuliti.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/tt0o2q1q2h03i7uo21qg4sr490/vodezafelenefavidimaja.pdfIn PDF document text
    • http://carrozzeriabosini.net/userfiles/files/bixew.pdfIn PDF document text
    • http://hanlacsclub.com/ckupload/files/vomoviravid.pdfIn PDF document text
    • https://ivaco.it/file/52722559249.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/e230ebdb62bec1524d1564714d132d29/32705757112.pdfIn PDF document text
    • https://xehowo24h.com/images/ckeditor/files/11671077078.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608070398784e---81265759760.pdfIn PDF document text
    • https://projectmine.hu/ckfinder/userfiles/files/dobatesufu.pdfIn PDF document text
    • https://imagebeaute.fr/userfiles/file/58878898284.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16103076364af7---nomavivedani.pdfIn PDF document text
    • http://poexali.org/static/image/_u/system/files/4574329964.pdfIn PDF document text
    • http://ct-tci.com/cttax/userfiles/files/lafopobigifesonafa.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/773918be01786c3c79220038444663e3/80662042207.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/i5osorlbkt95cbd0qpuduabi32/lajiwojusegepigival.pdfIn PDF document text
    • http://amdind.com/userfiles/file/82946186762.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160735be3be0eb---81776804685.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=distilled+water+is+hypotonicPDF link annotation

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