Malicious PDF — malware analysis report

Static analysis result for SHA-256 660f124a0113eef4…

MALICIOUS

PDF

54.7 KB Created: 2021-09-17 12:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: a9285776c93bb4f3ca737cdf3883ada5 SHA-1: c5abdfac52d98a11e460b6300e5d95f971ae102a SHA-256: 660f124a0113eef46ab6b36f362917e79e844c1a89d245231bf14e3925f21c04
124 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to external PDFs hosted on disposable domains, suggesting a link farm or phishing lure. The presence of multiple unknown URLs points to a distribution mechanism for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6278

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://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/icnbjji5fdee50arroqgm93f8i/76746862766.pdf In PDF document text
    • http://hotelniagararimini.eu/userfiles/files/47038667972.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/87217829869.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/e71d41f789575e9c005103fb275777d2/34644252874.pdfIn PDF document text
    • http://freetds.net/userfiles/file/kovobojil.pdfIn PDF document text
    • http://dichvutot99.com/webroot/img/files/parilunediwinazixudebez.pdfIn PDF document text
    • https://doosradashak.in/ci/userfiles/files/votuzu.pdfIn PDF document text
    • http://zhongjiukeji.com/upload_fck/file/2021-9-5/20210905021507996896.pdfIn PDF document text
    • http://ninda.vn/userfiles/files/27577047145.pdfIn PDF document text
    • http://muaah.ca/userfiles/files/78621136848.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/gemodanowobosasi.pdfIn PDF document text
    • http://newtarrytowndeli.com/uploads/files/totemeluxenalasumirusu.pdfIn PDF document text
    • https://tongdaidoanhnghiep.com/app/webroot/upload/files/27796747089.pdfIn PDF document text
    • http://liderzy.natura2000.pl/imgturysta/files/67652401557.pdfIn PDF document text
    • http://aristosaigonhotel.vn/uploads/files/23011810910.pdfIn PDF document text
    • http://pekingtogo.com/uploads/files/44544244152.pdfIn PDF document text
    • http://perksys.com/userfiles/file/85420513025.pdfIn PDF document text
    • https://renault-service.com/userfiles/lutizaket.pdfIn PDF document text
    • http://autoscuolepintozzi.it/userfiles/files/rexevowupizadolos.pdfIn PDF document text
    • http://aorganboys.handyfriendship.com/upload/files/45310223373.pdfIn PDF document text
    • http://morpheus-architects.com/file_media/file_image/file/66568384469.pdfIn PDF document text
    • http://eubeer.vn/uploads/files/93531142043.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/32500958124.pdfIn PDF document text
    • https://zebcom.in/userfiles/file/89775076410.pdfIn PDF document text
    • https://finliz.lt/i/File/wakifidetovam.pdfIn PDF document text
    • http://arcadia-fitness.es/userfiles/file/xipew.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=seeing+444+and+222PDF link annotation