Malicious PDF — malware analysis report

Static analysis result for SHA-256 c014c8fdbcf92db9…

MALICIOUS

PDF

48.0 KB Created: 2021-09-27 04:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 2b9df5310d7d49b00a59165884803149 SHA-1: d6289fe9888001426a761cd169f8f0ddeea5b009 SHA-256: c014c8fdbcf92db90f4dff55646d4fb749711e320951e96005d2d2cee0a80187
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that point to compromised CMS uploads and disposable hosting, likely to redirect users to malicious sites. The embedded URLs and link farm heuristics strongly suggest an attempt to lure users to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6441

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 https://crewmak.ru/uplcv?utm_term=how+to+reset+my+android+keyboard PDF link annotation
    • https://galaxytraining.examinationonline.com/files/49559168172.pdfIn PDF document text
    • http://jamones-luna.shopcloud.es/ckfinder/userfiles/files/61736518716.pdfIn PDF document text
    • http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/42033241108.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145166e3c3ea---7498870006.pdfIn PDF document text
    • http://fujieshubao.com/zk/UploadFile/file/2021090210052073499.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/673783ed5bfe3f36370e463053ac2247/xetigubewafun.pdfIn PDF document text
    • https://profm.hu/files/file/99760115898.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f27e70f351---vufegipimezowojemis.pdfIn PDF document text
    • https://ihappywash.com/uploads/files/202109081500472348.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1182ca32b---zesavevo.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/98915495521.pdfIn PDF document text
    • https://tekdalyapi.com/upload/ckfinder/files/rerenasakuwudabonobaw.pdfIn PDF document text
    • http://ducthoaudio.com/upload/files/zekuxuguja.pdfIn PDF document text
    • https://greenbins.ca/ckfinder/userfiles/files/golajazaradozodomidiza.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/161404922857b8---movujogikujajerupib.pdfIn PDF document text
    • http://www.mediagrand.hu/data/editorfile/80725303082.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613360deddd02---mebezeki.pdfIn PDF document text
    • https://tedesco.pl/userfiles/file/bugavamilewolibi.pdfIn PDF document text
    • https://pt-joker.com/contents/files/nifitu.pdfIn PDF document text
    • http://zensushialiso.com/uploads/files/20376673876.pdfIn PDF document text
    • http://xn----8sbfhu6ab4bqv.xn--p1ai/userfiles/file/21225300712.pdfIn PDF document text
    • http://ahzgbh.news-read.com/upload/files/27822115487.pdfIn PDF document text
    • http://pizzeriagiganti.ro/imagini_ws/46240431800.pdfIn PDF document text
    • https://el-tall.pl/pics/file/35263864078.pdfIn PDF document text
    • http://cualuoiskydoor.com/webroot/img/files/vipebezafimewun.pdfIn PDF document text

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