Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac5d1231fbff9da…

MALICIOUS

PDF

58.1 KB Created: 2021-09-04 16:36:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 8eb9d3f73f68c443265bef3b6361ecee SHA-1: a49f7c27a3a64daa0df7dc9f0abe7bb38c9f4191 SHA-256: 7ac5d1231fbff9da3312dab4605a36dd59d64ee1b83606450d1e64d98e5afb3d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution lure. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. The sample's structure as a link farm indicates it is designed to redirect users to external, potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://vildmarksjagt.dk/userfiles/file/4090572889.pdf In PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/479bfbda1e60f72b7874020070d97a1d/70676446603.pdfIn PDF document text
    • http://mamam.by/upload/File/file/pigukonokivibufanufidu.pdfIn PDF document text
    • http://kojeneckezbozi.eu/userfiles/file/7915154189.pdfIn PDF document text
    • http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/68544917357.pdfIn PDF document text
    • https://educationindiajournal.org/ckfinder/userfiles/files/xafipufopogomafusodup.pdfIn PDF document text
    • http://marinda.ru/pics/images/file/sidijotizivazemarigusol.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021082922314728.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/708f38c2d3880718ae9f2aa964aad63d/89960629256.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/xogutusizeli.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b09d5fc1506---bofasarusa.pdfIn PDF document text
    • https://actorconseil.com/files/file/32732321550.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/62501355210.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/68eec416dde91639fbd24adde6b74c7b/vatuvijuxurelogasoj.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/o54iefggvukrdjs5uobj10l8gb/72516216562.pdfIn PDF document text
    • http://dialog-seversk.ru/jsplugins/ckfinder/userfiles/files/37374307846.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/24693283666.pdfIn PDF document text
    • https://carsen.sk/editor_uploads/system/files/77479474179.pdfIn PDF document text
    • https://interior-mark.com/ckfinder/userfiles/files/surororogukamexevumibad.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/abee3ac0afece103aa20358de27ddfb3/34282551702.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16116cb5d02a2f---79517474700.pdfIn PDF document text
    • http://neoneofitou.com/ckfinder/userfiles/files/50987030829.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f8502ae6847---fazufudukaxofa.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/6c258b9836e8099bcbee82c782122262/28754873064.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/48d48b3ef497af3ab4be11d3c490cae3/befafaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=hikvision+ip+camera+installation+and+configuration+pdfPDF link annotation

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