Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd463b837cbb6f3…

MALICIOUS

PDF

38.6 KB Created: 2021-04-03 05:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 49c258bdae0ba78079e08a721a24115c SHA-1: c3ef9a6d19d146860a0534614dfe4dcefc2a99e0 SHA-256: 0dd463b837cbb6f32d27dca0d4c2337221db2a2dd03c33511583283a23f730f9
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7465

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://kuzutuzo.ru/strik?utm_term=the+daniel+plan+10+day+detox+menu PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4390074/normal_5ff8c32fb62e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530868/normal_6013f47a883e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503617/normal_5fe12726df27e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419628/normal_602a09ebe9b95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422137/normal_6055ff8863c2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476601/normal_5febc37ae5331.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464869/normal_603c701fbb33f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388040/normal_6051e57d55420.pdfIn PDF document text
    • http://vatojaginasi.22web.org/103825351In PDF document text
    • http://govegid.rf.gd/46366998273.pdfIn PDF document text
    • http://bikaxubu.rf.gd/cerebral_palsy_ataxia.pdfIn PDF document text
    • http://timefata.epizy.com/fuwonibebajuselexij.pdfIn PDF document text
    • https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_220cf963df4c4df58cfa48961835db00.pdf?index=trueIn PDF document text
    • http://nifagusimesizi.epizy.com/application_for_us_citizenship.pdfIn PDF document text
    • http://witivovubujo.epizy.com/27879025166.pdfIn PDF document text

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