Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc508aab0d7f7ad7…

MALICIOUS

PDF

47.6 KB Created: 2021-06-15 13:14:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 06cc86c8d18139a09c3ba3ba6a00a031 SHA-1: 6db77aaffc5c51195274a6ffb2ff712b5f62c806 SHA-256: dc508aab0d7f7ad7a1876b179142f9d602823be888208736a78aae0422562294
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised websites, suggesting an attempt to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the overall structure and URL targets are indicative of a phishing or downloader campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7205

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://coretry.ru/uplcv?utm_term=shellfire+moba+fps+apk PDF link annotation
    • https://aspirans.com/files/file/boverukinokoragigodogeluz.pdfIn PDF document text
    • https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/blockcv2b2mf3le52biih6amo1/mupofobesufidilowub.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078814d8064e---botewun.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/werasagopepuzaridupagu.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/zazazef.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/ebabc728aafd6d0b1d5e14962053a67b/12463203924.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/1e65440c20e6cb1b029a92e4e5baaf78/rabepileze.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/72208640506.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c0e87ad833---gixifipolufalop.pdfIn PDF document text
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/jesijaxapazakomaxedoz.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/rubewumog.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/6275983900bb0c2df108a826179fcca4/japufujegibolexirurit.pdfIn PDF document text
    • https://aimara-bg.com/userfiles/file/mabaxevuzekovososipa.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a56f254eeb---91782888761.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1607191708354b---fukuxosogotimu.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/g2mj71sp9unq76ieo2dmf08oak/ladelazajimetunojusomalul.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/8950043552.pdfIn PDF document text

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