Malicious PDF — malware analysis report

Static analysis result for SHA-256 956f1a8cd8936dea…

MALICIOUS

PDF

63.7 KB Created: 2021-09-20 15:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: ace02a6e2489f32437cf16ce5c4331fe SHA-1: 83ee0df7a144741f29bb0e71bdf3c61bdaf464fa SHA-256: 956f1a8cd8936deaab15272c795bbb9a7cfe4ea948606b1043d350f7c92aa732
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file contains embedded JavaScript, a common technique for executing malicious code within PDFs. It also features a large number of external URLs, many of which are hosted on disposable domains, suggesting a link farm or redirection infrastructure. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing or trojan distribution intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4239

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
  • 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://huntic.ru/uplcv?utm_term=8+days+from+now PDF link annotation
    • https://livres-arts.com/ckfinder/userfiles/files/76636707278.pdfIn PDF document text
    • http://pizzeriagiganti.ro/imagini_ws/91643867190.pdfIn PDF document text
    • http://avanti-kuhni.ru/upload/files/wenevaxisevunamaz.pdfIn PDF document text
    • http://garageanything.com/js/upload/files/zodetefasidinemudafefotu.pdfIn PDF document text
    • http://abwmountvernon.com/uploads/files/68112195251.pdfIn PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/70977964177.pdfIn PDF document text
    • http://saikunghouse.hk/userfiles/kobigofuliwogogotebeti.pdfIn PDF document text
    • http://galeriejacqueselbaz.com/userfiles/file/82835323193.pdfIn PDF document text
    • https://interstudy.net/userfiles/file/7315589934.pdfIn PDF document text
    • http://piri-piri.pl/ckfinder/userfiles/files/jikotawipetipazuv.pdfIn PDF document text
    • https://webmenuplus.com/images/file/97000513075.pdfIn PDF document text
    • http://pr-jam.com/ckfinder/userfiles/files/52696810805.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/43671830113.pdfIn PDF document text
    • https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/sutoroxuzipiwir.pdfIn PDF document text
    • http://tienphat.vn/imagesflashupload/file/70211984988.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143044130d33---85195737123.pdfIn PDF document text
    • http://wiskind.com/filespath/files/20210912142111.pdfIn PDF document text
    • https://anglarill.net/userfiles/file/80925297784.pdfIn PDF document text
    • http://life-worldwide.org/assets/uploads/files/pawidavibusexizuradesone.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/20d59f0cd22fc3307980a7c903213f9b/21700317429.pdfIn PDF document text
    • http://motoren-adachi.com/js/upload/files/22752671983.pdfIn PDF document text
    • http://dulichgiahy.com/upload/file/mizoraledomonesepozer.pdfIn PDF document text
    • https://lazerom.pro/media/file/10743935408.pdfIn PDF document text
    • http://xn--b1adrijbbb.xn--p1ai/upload_picture/maragoja.pdfIn PDF document text
    • https://srilangkapools.com/contents/files/xazinibokuwamodapamafon.pdfIn PDF document text

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