Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd276d2bb7fe1682…

MALICIOUS

PDF

47.6 KB Created: 2021-09-16 11:06:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: fa4af529fcd3f51c89b8fe2591876687 SHA-1: 42bc77c424d3c24b62638c58acb3e593c82fdac8 SHA-256: bd276d2bb7fe168261810df41843444dae483640484c87203a90689494ebb390
132 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and a high number of external URIs pointing to disposable hosting, indicating a link farm designed to distribute malicious files. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely used to facilitate the download or execution of a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7471

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://farmacieitaliane.com/documenti/file/xadapoxawobokulos.pdf In PDF document text
    • https://nakipoglugroup.com/upload/ckfinder/files/72550935731.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/296thituapondnp0uagf5db9us/gipalaxavu.pdfIn PDF document text
    • http://phannhan.vn/files/usersfiles/files/98764111324.pdfIn PDF document text
    • http://balbu.hu/uploads/news/file/31335648282.pdfIn PDF document text
    • http://hoteldanang.com/uploads/images/files/10398490864.pdfIn PDF document text
    • https://dom4m.com/userfiles/files/53822889518.pdfIn PDF document text
    • https://xuanhongkhang.com/upload/files/28117618246.pdfIn PDF document text
    • https://cicadit.ro/UserFiles/file/woduva.pdfIn PDF document text
    • http://minipit.com/data/files/9315470706.pdfIn PDF document text
    • http://bestofbeer.ru/ckfinder/userfiles/files/77683782951.pdfIn PDF document text
    • http://hoilhpnqbthanh.com/upload/file/1179375616.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/25811925419.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613c94b6e93ec---vofirikapidizas.pdfIn PDF document text
    • https://darshanam.com/ckfinder/userfiles/files/12881120926.pdfIn PDF document text
    • https://bestcaps99.com/ckfinder/userfiles/files/bipobagopurijiposenodo.pdfIn PDF document text
    • http://dep14kirov.ru/userfiles/file/kevibepupaniguxolagogexiw.pdfIn PDF document text
    • http://kojeneckezbozi.eu/userfiles/file/35134178432.pdfIn PDF document text
    • http://kolbiko.com/images/uploads/file/loxidatijozilu.pdfIn PDF document text
    • http://fitviewer.biz/files/file/bozatifegor.pdfIn PDF document text
    • http://osayit.com/images/file/ramibi.pdfIn PDF document text
    • http://curvesncontours.com/userfiles/file/nagutivexuzotovafip.pdfIn PDF document text
    • http://ambvetbrashersclavoghisu.eu/userfiles/files/12540334345.pdfIn PDF document text
    • http://simpelms.nl/userfiles/files/surowo.pdfIn PDF document text
    • http://precisionsurgicalworks.com/alpha/ckfinder/userfiles/files/67967457884.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=the+japanese+skincare+revolution+pdf+free+downloadPDF link annotation

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