Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e3c69d6e9a0ae3…

MALICIOUS

PDF

52.0 KB Created: 2021-09-09 13:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 5811146fe4108070578ffc3bf3522f04 SHA-1: 09e4d9346c0535e67a3a5e0e8418ee1f6dc4c860 SHA-256: 93e3c69d6e9a0ae334f2130f2fef3be9bd85c19a5089f4e1ff3b65dec4d6bff0
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised or disposable hosting. Heuristics indicate this is a link farm designed to direct users to external sites, with ClamAV identifying it as a phishing trojan. The ML classifier also flagged the PDF as malicious, supporting the conclusion that it is used for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6986

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://pokeocncafe.com/uploads/files/90074364163.pdf In PDF document text
    • https://commonlawhouse.in/userfiles/file/powogorudupenug.pdfIn PDF document text
    • http://tinavaron.com/ckfinder/userfiles/files/lenasup.pdfIn PDF document text
    • https://likeevent.it/writable/public/userfiles/file/29741921774.pdfIn PDF document text
    • http://pi-consulting.ch/download/wumidopowadurogufevu.pdfIn PDF document text
    • http://esebtekstil.com/resimler/files/9674373930.pdfIn PDF document text
    • http://kreativitaet-stadlhofer.at/global/images/userfiles/file/zazilasosavobewoletu.pdfIn PDF document text
    • http://domplus.su/userfiles/files/71273322395.pdfIn PDF document text
    • http://ronaldtan.nl/images/photo/92104289657.pdfIn PDF document text
    • http://moscowfashion.net/content/xuploadimages/file/devududemirupuvaduxo.pdfIn PDF document text
    • http://www.oe.com.tw/ezadmin/ckfinder/userfiles/files/56558213707.pdfIn PDF document text
    • http://weighlessthisyear.com/ckfinder/userfiles/files/defaxisirupukaxutu.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/0c78275949f0d18df42b61ab98fad1b8/zamuwen.pdfIn PDF document text
    • https://mayphotocopydogia.com/upload/files/vowuzeripexememonun.pdfIn PDF document text
    • http://maradonasalud.com.ar/ckeditor/ckfinder/userfiles/files/divovusafabuwadexig.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16136c3e2a59d6---45823943975.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/73660642282.pdfIn PDF document text
    • http://millecolori.it/images/file/413675993.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/161300b78cfd6c---vodeditix.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16134d4c62f25a---lerefalanebemevovopinuvi.pdfIn PDF document text
    • http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/rapoxapukilaxojazesam.pdfIn PDF document text
    • http://cuathepvangohaiduong.com/images/ckeditor/files/pomagewujetoruzupeki.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=mobile+to+pc+transfer+wifiPDF link annotation

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