Malicious PDF — malware analysis report

Static analysis result for SHA-256 f655d1f90da5db9e…

MALICIOUS

PDF

48.4 KB Created: 2021-10-08 09:25:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f80180ce06481ab7b60b99256110617a SHA-1: 3734081391f5d9b0e3008abca01dbacafb8c6bea SHA-256: f655d1f90da5db9ee83d7f1bd48cabe9cdb8f9073e413d629fe4446840b363c1
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to external websites, indicating a link farm designed to redirect users. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics confirm its malicious nature, with ClamAV identifying it as a phishing trojan. The PDF structure and embedded links suggest it's used to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6671

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://laborke.ru/uplcv?utm_term=diabetes+and+amputation PDF link annotation
    • https://dukra.sk/editor_uploads/files/milebatifekuxogaw.pdfIn PDF document text
    • http://euskararenginkana.eus/files/galeria/files/letemivopekawuxijiladapok.pdfIn PDF document text
    • http://zlzljc.com/uploadfile/file///2021090708080565.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137f25071fcd---72109318252.pdfIn PDF document text
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/72206553329.pdfIn PDF document text
    • http://nepalbestcargo.com/userfiles/file/vebepajiwegamosezag.pdfIn PDF document text
    • http://digivideos.net/ckfinder/userfiles/files/49895578117.pdfIn PDF document text
    • http://propack-th.com/image/upload/File/60422307651.pdfIn PDF document text
    • http://paglialonga.it/userfiles/files/nebolutadukanoje.pdfIn PDF document text
    • http://jrmhandling.nl/upload/file/24055495331.pdfIn PDF document text
    • http://medizator.ru/ckfinder/userfiles/files/bemenoxafarusekam.pdfIn PDF document text
    • http://www.ags-sib.ru/ckfinder/userfiles/files/57511122505.pdfIn PDF document text
    • http://faradbox.pl/files/file/dozumozomuselaki.pdfIn PDF document text
    • https://anhhuynoithat.com/asset/files/lififodin.pdfIn PDF document text
    • https://indicaperu.com/userfiles/file/pukigem.pdfIn PDF document text
    • https://www.champagne-cornevin.fr/ckfinder/userfiles/files/kidulu.pdfIn PDF document text
    • http://szkolka-wiercioch.pl/files/file/didegowidogulolebuzadilu.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/aed71a1402633a1161b6388740095463/mosapep.pdfIn PDF document text
    • https://skvacations.com/userfiles/file/93575217335.pdfIn PDF document text
    • https://bitree.ru/ckfinder/userfiles/files/jarivapumuvagefelugagub.pdfIn PDF document text
    • https://menuiserie-sainte-anne.fr/userfiles/file/74392919938.pdfIn PDF document text
    • http://gzxmbx.com/uploadfile/file/2021100105105273499.pdfIn PDF document text
    • https://steklo-shik.ru/userfiles/file/15217088227.pdfIn PDF document text
    • http://rakkhunnursinghome.com/user_img/files/99772613288.pdfIn PDF document text
    • http://innova-perila.ru/upload/files/64942280974.pdfIn PDF document text