Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46e34e10ce926a7…

MALICIOUS

PDF

45.4 KB Created: 2021-09-24 20:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 60710b7335c97e36d9816d80be0791b1 SHA-1: b07e67c886e38a3ef7673b72bebcfdb966003803 SHA-256: d46e34e10ce926a7d9064b063abcd3f059b5658ee5e515d721f059b517ab9233
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The presence of 'utm_term' parameters in some URLs further supports a phishing or SEO poisoning attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7111

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://archism.ru/uplcv?utm_term=my+hero+academia+season+2+episode+16+english PDF link annotation
    • https://karlholmbygg.se/UserFiles/files/13263847916.pdfIn PDF document text
    • https://profm.hu/files/file/jupoderezi.pdfIn PDF document text
    • http://sevennews.com.br/ckfinder/userfiles/files/xawufiseja.pdfIn PDF document text
    • http://pokemom2.com/uploads/files/wikepanowimoberaje.pdfIn PDF document text
    • http://kag.fr/userfiles/file/99146420642.pdfIn PDF document text
    • http://fongyoskert.hu/userfiles/files/xebazawaxele.pdfIn PDF document text
    • http://pierrevillers.fr/mairie_files/file/dukidigofevoresukuwar.pdfIn PDF document text
    • http://lctrading-gmbh.com/ckfinder/userfiles/files/fogaz.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161393ac2611c4---30783131877.pdfIn PDF document text
    • http://orderbestwings.com/uploads/files/zodarerad.pdfIn PDF document text
    • http://dealershop.es/userfiles/file/57704395406.pdfIn PDF document text
    • http://pharmorgsyn.com/upload/files/26156984733.pdfIn PDF document text
    • https://pgp-puh.hr/fck_media/file/57506957952.pdfIn PDF document text
    • http://thietbikhachsanvinhhung1.com/upload/files/misatesaninomovom.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/jipomari.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1614ad53035e91---tosakiwonivelo.pdfIn PDF document text
    • http://steinemann-ag.ru/rovuwefewuramifup.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/eabde5b6e307b04fcb4c3a24a5689468/22246089203.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149984cdd8d7---65587270771.pdfIn PDF document text
    • https://dmitrovka-zn.ru/admin/ckfinder/userfiles/files/galoxakejowawej.pdfIn PDF document text
    • https://oz.korytnica.eu/data/files/wugejozaluxixako.pdfIn PDF document text
    • https://chaletsuenodesol.de/files/88747136754.pdfIn PDF document text
    • http://bualuang101.com/backoffice/upload/files/fugisanepoxefutameb.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/b62dca599e640f179a70a1e877456186/4163719041.pdfIn PDF document text
    • https://vivekanandbawwa.com/userfiles/file/lonuf.pdfIn PDF document text

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