Malicious PDF — malware analysis report

Static analysis result for SHA-256 b80326252ff1adb9…

MALICIOUS

PDF

65.1 KB Created: 2021-08-16 08:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 46ffc0f290e0b83c0cdfed0d948f80cb SHA-1: aa121c3d20256248c53866c079b3002e1aff0c2d SHA-256: b80326252ff1adb9195a8fbab2bd9819a728062268f6b3da53f5d6c673712b50
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised WordPress upload storage locations and other suspicious domains. The presence of external URIs and the overall structure suggest it is intended to lead users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9601

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://irlanc.ru/uplcv?utm_term=harry+potter+y+la+piedra+filosofal+pelicula+completa+en+ingles+youtube
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161043dc52e0b4---ropabibopufunafufipara.pdf
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/6e7c3d9795105280043b7e8890cd6e0a/xitemarebeposokoxinatatej.pdf
    • http://womenwhorockarkansas.com/clients/4/4c/4cfcdabbb7b8ad81bafe9a4295858145/File/banazojagiro.pdf
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/bbf66682baf4490169d3be3904c059c4/pudesuguxira.pdf
    • https://atiksigorta.com/files/kukasama.pdf
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/5225dbb9e54d19471d12c2dfb42b9ff1/47133803755.pdf
    • http://marjoleintje.nl/include/userfiles/nozaragajazetadova.pdf
    • http://pospatrans.cz/UserFiles/File/dafepodireb.pdf
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7b1de830e---sikumul.pdf
    • https://chief-moving.com/editor_upload/file/16430902072.pdf
    • http://euro520.net/userfiles/file/162702454989704075.pdf
    • https://adsbudget.net/userfiles/file/bosunetifujekikedas.pdf
    • https://jogamiskolc.hu/ckfinder/userfiles/files/84455503200.pdf
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160838b2d1f220---11104190582.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3d52c2dc2---12194132744.pdf
    • http://nowyhotelik.pl/userfiles/file/28533231615.pdf
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/ba33a1732faf2086cda39ecc46adfd33/dawemawezuzid.pdf
    • http://khamtribacninh.com/images/files/dusipasovoj.pdf
    • https://trongtrucsolution.com/uploads/files/86529729641.pdf
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3dc23a39f---dabisudokevuvul.pdf
    • http://biosite.ru/images/news/file/11250479970.pdf
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/e18f1037572214f81fe72e2a13aacd7c/vuxabeku.pdf
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2198a5b98f---lunudewodovupapukotus.pdf
    • https://artedeeducar.com.br/ckfinder/userfiles/files/76918804452.pdf
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160840b84b2dc6---14046062786.pdf

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