Malicious PDF — malware analysis report

Static analysis result for SHA-256 5406c61ac3eb6375…

MALICIOUS

PDF

55.5 KB Created: 2021-09-11 07:34:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e2b0e88be056321b8670096047c0d1c0 SHA-1: b22ae963b7ff8565ceb29cb33099a3a0e56c3f1a SHA-256: 5406c61ac3eb637552d875f2cc993e2f9db68f395bed5dbe69f3c477769fb28b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. The presence of numerous embedded URLs pointing to a link farm suggests an attempt to redirect users to potentially malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically highlights the nature of these links as a potential lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6836

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ipekyolumedya.com/resim_galeri/file/xepovexi.pdf In PDF document text
    • http://balone.net/_upload/file///vugaratolewenonoja.pdfIn PDF document text
    • http://kalkulacka-hypo.cz/userfiles/files/datagovodozilokixuza.pdfIn PDF document text
    • https://chungangroup.com/uploads/files/202109051550425435.pdfIn PDF document text
    • http://rialta.ie/userfiles/files/88737898276.pdfIn PDF document text
    • http://sandsflooring.co.uk/ckfinder/userfiles/files/rawanunurazirevifopod.pdfIn PDF document text
    • http://audidalys.lt/ckfinder/userfiles/files/banupojonapete.pdfIn PDF document text
    • http://01host.ru/userfiles/files/miluturilemixetipemiw.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161391a0258a77---daweviruwumoderibi.pdfIn PDF document text
    • https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/zazirebejunodamazapum.pdfIn PDF document text
    • http://laureysnv.be/uploads/files/19336676159.pdfIn PDF document text
    • http://enjoy.sk/editor_uploads/system/files/36477524541.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131fe313ed29---zudesi.pdfIn PDF document text
    • http://odessawa.com/userfiles/file/mazegotudipajogatiru.pdfIn PDF document text
    • https://sitycare.com/FCK-UserFiles/files/60785459335.pdfIn PDF document text
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/96486476928.pdfIn PDF document text
    • http://kirsanov-maslo.ru/uploads/pomifitamopirudabodi.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/38360698686.pdfIn PDF document text
    • https://bocion.com/ckfinder/userfiles/files/88553996794.pdfIn PDF document text
    • http://xn----8sbemnkjd7bfu.xn--p1ai/design/img/upload/file/84165442856.pdfIn PDF document text
    • http://qhchemicalsfeed.com/upload/files/44170714475.pdfIn PDF document text
    • http://mansiya.com/uploadfile/files/58883946266.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=where+do+i+find+saved+pages+on+my+phonePDF link annotation

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