Malicious PDF — malware analysis report

Static analysis result for SHA-256 74f12c7794525ab8…

MALICIOUS

PDF

48.0 KB Created: 2021-07-02 03:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6f2cddc7f506f8ba514b2bca8045dc0b SHA-1: 656057e26bf81efc943b236ebd400228050a1c8c SHA-256: 74f12c7794525ab8cbab32bc408860b680f5a4631959e5841de0bea8b6d1e4ec
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains numerous links, many pointing to compromised WordPress sites, indicating a link farm or phishing attempt. ClamAV detected this file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0', and an ML classifier also flagged it as malicious. The document body was unreadable, but the heuristics strongly suggest malicious intent through URL manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8493

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 http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607646d51f710---tutitujedajalopasumuz.pdf In PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/23775698113.pdfIn PDF document text
    • http://www.contectrade.hu/fckfiles/file/bewokuduxubijowupi.pdfIn PDF document text
    • https://bursakaynak.net/userfiles/file/dejuletuw.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b210f55fbb---vexapod.pdfIn PDF document text
    • https://hantverkarenisandby.se/UserFiles/files/togemunubofafanilanu.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/57528668309.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/51454132866.pdfIn PDF document text
    • http://cappellastudio.it/userfiles/files/2741302719.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/60p925ueifkfgpsbr6ttitbd10/molupi.pdfIn PDF document text
    • http://mbcasc.net/imgs/file/totubolemulekajowilajado.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/299dd7953145dc450af9b09e2aeef1d9/31468961974.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b26dd7e6ff---66852985494.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/8co3tb0ti9d02dufbou00kd37b/48183232231.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff8775b981---11977545829.pdfIn PDF document text
    • http://antonioruizabogados.es/userfiles/file/vorusazejemixafarax.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/7a662a54f6f484106fbb6351e8565a1a/gofarugalemikidez.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608df3cc2286e---pelumozelugimixesorasikul.pdfIn PDF document text
    • http://alicekhenrylawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/76004426287.pdfIn PDF document text
    • http://areaengineeringsrl.eu/userfiles/files/punawutadazeripolobuluzi.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ec1949c8f---ziwewonajitiredi.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/232udsrk74er0umnloimgvud1u/90987219686.pdfIn PDF document text
    • http://leebyunghun.org/new/upload/board/files/62429225517.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/7b5b75525d9abcd29176f802c7841ba7/50050814638.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=substitution+cipher+typesPDF link annotation

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