Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c2e9a97f317529…

MALICIOUS

PDF

69.3 KB Created: 2021-09-12 12:04:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 2785a9b0f38daf28351587fef73e1c3c SHA-1: 5e6b6a3a639d5c05bec502753b6ed85aad7fba82 SHA-256: f0c2e9a97f317529561444d9d49fa742cb8ac4261c73ba810814933f64a2b954
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 it is likely a phishing or malware distribution lure. It functions as a link farm, containing numerous URLs pointing to external sites, some of which are hosted on compromised WordPress installations or disposable domains. The primary purpose appears to be directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5802

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://irlanc.ru/uplcv?utm_term=yu+gi+oh+nds+rom PDF link annotation
    • http://otevrel.eu/ckfinder/userfiles/files/pezojumeze.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa364ad9a1---waginuzonisanebewopep.pdfIn PDF document text
    • http://thunderstar.cn/userfiles/file/20210907084916911307482.pdfIn PDF document text
    • http://www.monts.sk/upload_images/file/99327472886.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/161336cb4dca5e---78654730622.pdfIn PDF document text
    • http://frankslawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pavasupozowe.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133887548c3f---64692897699.pdfIn PDF document text
    • https://ethnicminorities.heephong.org/ethnicminorities/cmsadmin/ckfinder/files/35388486470.pdfIn PDF document text
    • http://polkovnik.su/upload/file/32589348890.pdfIn PDF document text
    • http://bergepkolcsonzo.hu/userfiles/file/dufipenolodefatugelub.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613804e84daef---61628130668.pdfIn PDF document text
    • https://artasedanasingaraja.com/uploadfck/file/98109466139.pdfIn PDF document text
    • http://nagymester.com/userfiles/file/20619417029.pdfIn PDF document text
    • https://optimustelecoms.com/ckfinder/userfiles/files/pivizimibapo.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/727brbjn9usl6q891bm7hembc0/62460723683.pdfIn PDF document text
    • https://led7.ru/file/dizaterogifad.pdfIn PDF document text
    • http://asu78.ru/userfiles/file/bigaf.pdfIn PDF document text
    • http://thelifelesson.net/home/tappingchanges/public_html/dowalumniusa/ckfinder/userfiles/files/49409119493.pdfIn PDF document text
    • http://saikunghouse.hk/userfiles/50021988954.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/78845663955.pdfIn PDF document text
    • https://bfull.ru/uploads/files/viriv.pdfIn PDF document text
    • http://mcrlclient.gilcom.ro/ckfinder/userfiles/files/47253757850.pdfIn PDF document text
    • https://www.stock2morrow.com/ckfinder/userfiles/files/vobunofuva.pdfIn PDF document text

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