Malicious PDF — malware analysis report

Static analysis result for SHA-256 287202c86df7b654…

MALICIOUS

PDF

54.6 KB Created: 2021-09-20 05:51:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: b842076c467fd25efef35cc51b45b191 SHA-1: 9f1f0b875e8a7375147abfa55395b1e7fac55880 SHA-256: 287202c86df7b654873e87c06fc9c8667753ac219cc3695ebc449bb842670336
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous embedded URLs, with one heuristic specifically identifying it as a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. No scripts were extracted, but the structure and URL patterns point towards a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6099

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://hotararicedo.ro/files/files/kimonufuwimefutatuv.pdf In PDF document text
    • http://nokianhakkablue.ru/ckfinder/userfiles/files/34395895906.pdfIn PDF document text
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/93085488691.pdfIn PDF document text
    • https://artedeeducar.com.br/ckfinder/userfiles/files/tonajejijus.pdfIn PDF document text
    • https://nstoplana.rs/ckfinder/userfiles/files/63103839340.pdfIn PDF document text
    • https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/73210970619.pdfIn PDF document text
    • http://gocchame.vn/app/webroot/img/uploads/files/pumubewenewifemuz.pdfIn PDF document text
    • https://anjingliar.com/contents/files/36510792742.pdfIn PDF document text
    • http://willowslakerhea.org/userimages/26443884970.pdfIn PDF document text
    • http://www.cottagegrad.ru/files/file/fumelerebaked.pdfIn PDF document text
    • http://hanstime.com/userData/board/file/86704136102.pdfIn PDF document text
    • http://amidoux-peintures.com/ckfinder/userfiles/files/64591604113.pdfIn PDF document text
    • http://krallarintavugu.com/upload/file/wukinowilabu.pdfIn PDF document text
    • https://abisspaandboutique.com/nbloom/fckuploads/file/vupexipison.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/purixewijovopokigopuvan.pdfIn PDF document text
    • https://shioturboapi4-xyz.com/contents/files/padusopegomajimiga.pdfIn PDF document text
    • http://kasargod.net/uploads/file/78578948834.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/tedik.pdfIn PDF document text
    • https://dichvumayphoto.vn/webroot/img/files/61341876876.pdfIn PDF document text
    • http://ttccid.com/userfiles/file/kobibibinubozob.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/pexadafo.pdfIn PDF document text
    • http://fgosvo.ru/files/files/wosifokoladuge.pdfIn PDF document text
    • http://www.ghidmariaj.ro/app/webroot/files/ckfinder/userfiles/files/66893042383.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=how+to+make+a+pdf+from+notes+on+iphonePDF link annotation