Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d2da3bf7c871b9c…

MALICIOUS

PDF

58.2 KB Created: 2021-06-28 17:38:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 99326e8f0ac8550ecd6525e118c52024 SHA-1: 8a0225001de6be357f4443aed02dedf950475bd3 SHA-256: 4d2da3bf7c871b9c607efb65d3e495138c6a0d5b4e23ca15ec98300f685c6be5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to compromised CMS upload storage, suggesting it functions as a link farm designed to redirect users to potentially malicious or phishing content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or redirection attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5801

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/ae14766fcfe5418437590d6252ea8ea2/72208345011.pdf In PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/b25cd486204c3c65805818db49e3983b/lujuzelaxirikigunir.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc71a760f8---bikadipojare.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/gr0jvmfhoo5m907fhaf0anc9g0/bovadopowize.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/kafifefili.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/cb8e15e2c12fe8ec66b6d26fa08cfa1f/tipafagatoteg.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/23c1634a3fcec74174c2e9e9e056be10/tubal.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e8da771a9---66894864405.pdfIn PDF document text
    • http://inglewood1968.com/clients/68690/File/deselarulakuvafiw.pdfIn PDF document text
    • http://kurskodkb.ru/page_edit/_samples/userfiles/files/piruko.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-5-1/20210501051231743264.pdfIn PDF document text
    • http://sparkpro.lv/content/file/xitevezefakuterujiv.pdfIn PDF document text
    • http://tikatalog.sk/_files/file/nusakafulavivesi.pdfIn PDF document text
    • http://ozari-ua.com/files/file/melibejebidat.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/tujotazezupomuvim.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8600627f8e---mudobasulijowumexirimot.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/6ffc77110d5e7d19dc0b91d3e9982858/36158028471.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/94b8254a180cfdfd5b28fd0097208ab7/fapumowibavenimomowexale.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/13321524537.pdfIn PDF document text
    • https://fullhousetourism.com/UploadFiles/file/20210531042557146.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/269830502a0226c3cc95c7e2eae13644/12040321427.pdfIn PDF document text
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/sejatenegedoz.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8a4aee9d3---8591660.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16098442fe9eae---dekadunikovigaxofadipaw.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160910a78db7c1---kepoxamezusuriwawam.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=inclement+weather+conditionsPDF link annotation

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