Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d2d0377f67ff01…

MALICIOUS

PDF

69.4 KB Created: 2021-09-06 10:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 46558e1ff7c5a048e0a937ae0f6b33fb SHA-1: befd1ab41bb45703cb82f36d8424f7871d1db078 SHA-256: c7d2d0377f67ff01f1bce1a35cc26253ef8f1eba1fa2d6639a4dd99bcbc84c57
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous links, many of which point to compromised WordPress sites. The ClamAV detection and heuristic firings indicate this is a phishing or trojan distribution attempt. The embedded links are designed to redirect users to potentially malicious content, leveraging compromised infrastructure for distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4729

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://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/tuagtqvau57oiqmo5fgtpn20re/tawujewakajevesadofubudot.pdf In PDF document text
    • https://a-pointpro.com/cms/ckfinder/userfiles/files/41943196707.pdfIn PDF document text
    • https://vinamex.info/uploads/news_file/gabofuxudatavugut.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ecd27c637---13366160342.pdfIn PDF document text
    • http://fvv-hohenfelde.de/sites/default/files/files/lenegoka.pdfIn PDF document text
    • https://orrizon.ru/images/file/mufiduxumedusob.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/glhk2ftdjtprmftfng3v31drpp/pebewutiwugulu.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/botolufu.pdfIn PDF document text
    • http://jrmhandling.nl/upload/file/pebonejolijukebepetubu.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/72049460405.pdfIn PDF document text
    • https://chris-arnold.com/userfiles/file/80592955870.pdfIn PDF document text
    • http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/xogokidinijepofu.pdfIn PDF document text
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ecc9d48668---73845902917.pdfIn PDF document text
    • http://www.pethouse.es/ckfinder/userfiles/files/74497385619.pdfIn PDF document text
    • https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/rabar.pdfIn PDF document text
    • http://lakesnwoodskerala.com/uploads/file/retirubulimijiz.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/sejm41k5hj4ros85rnug236ni5/wuzox.pdfIn PDF document text
    • http://luluscafeonline.com/uploads/files/lunavema.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/41f4d215309d74e53cffba91e94c007b/wapaluvetodevarow.pdfIn PDF document text
    • https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5db4e17b101aab57e5edef7fabe752c2/kuvinululomizilagogi.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a720ee3f0f---gapoba.pdfIn PDF document text
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/22396980096.pdfIn PDF document text
    • https://irepairplus.nl/app/webroot/files/userfiles/files/dabonebasulutozoleninov.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/94c8ab020642c2b1e4ac765d249f2fd9/viwofebilosulimu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=double+integral+in+polar+form+pdfPDF link annotation

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