Malicious PDF — malware analysis report

Static analysis result for SHA-256 e478202e25e209fe…

MALICIOUS

PDF

50.9 KB Created: 2021-10-07 18:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 158b15a1835634e59e3772ccc23e57a6 SHA-1: c6a8e5f525377cef7ffb387b0857ac9fe7fe28e5 SHA-256: e478202e25e209fe05e84832f431ef85e2b37f2620319b841d546173788a24db
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on compromised WordPress sites, indicating a link farm designed to redirect users to potentially malicious destinations. ClamAV detection and ML classification strongly suggest malicious intent, likely for phishing or malware distribution. The presence of multiple external URIs and compromised CMS upload links points to a tactic of leveraging potentially untrusted hosting for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

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://wastran.ru/uplcv?utm_term=apartments+for+rent+in+point+fortin PDF link annotation
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613363fd5c41d---jejakexakexelorusagunud.pdfIn PDF document text
    • http://www.aunay-sous-auneau.fr/ckfinder/userfiles/files/kekemasutozofekediguduta.pdfIn PDF document text
    • http://yasaitogo.com/uploads/files/rumurujufegolenexi.pdfIn PDF document text
    • https://arendic.cl/files/31971605885.pdfIn PDF document text
    • https://dimensioninteractive.com/WYSIWYGImage/file/raruraxemogetulomedufig.pdfIn PDF document text
    • https://venus-forever.com/image/files/86466156987.pdfIn PDF document text
    • http://musicpark-live.de/userfiles/file/zoxetozakujuzawonavotek.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158308fe2fc4---80272069723.pdfIn PDF document text
    • https://securitydm.net/slicice/file/67103530162.pdfIn PDF document text
    • https://altonika.pro/files/fck/file/80566187467.pdfIn PDF document text
    • https://namhunglogistic.vn/site/files/70567487132.pdfIn PDF document text
    • http://jplus-ag.com/upload/files/BodyFile__6150A512CA20E.pdfIn PDF document text
    • http://massimosusto.eu/userfiles/files/sogutibiraxozapinonus.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16153ade240f55---21325104816.pdfIn PDF document text
    • http://webs.eusko-ikaskuntza.org/files/galeria/files/lugojaferowadudil.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/16156dbc9c247b---gorutijiviruxonivo.pdfIn PDF document text
    • http://ambulatorioveterinariocamali.com/userfiles/files/tubepisix.pdfIn PDF document text
    • http://ildungrice.com/fileupload/fckeditor/file/8465424609.pdfIn PDF document text
    • https://www.totalblissbeauty.com.au/application/third_party/ckfinder/userfiles/files/14680088077.pdfIn PDF document text
    • http://tulga.ru/editor/files/89526178433.pdfIn PDF document text
    • http://karaokejdi.com/ckfinder/core/connector/php/upload/files/42025823715.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16159b26bdac39---xotugik.pdfIn PDF document text
    • http://newcompanyindia.com/admin/userfiles/file/nerubaxamubeguzudu.pdfIn PDF document text

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