Malicious PDF — malware analysis report

Static analysis result for SHA-256 b471f92a3e629879…

MALICIOUS

PDF

64.0 KB Created: 2021-03-12 07:56:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42229b86f42495237b7e12e41c485b80 SHA-1: 10fa34921d230e7d9dbcafb8b9340735c5e51d0f SHA-256: b471f92a3e629879f5db11a22a3be728b64dd768b259c692e710543e643009fd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links to other PDF files hosted on various domains, indicating a link farm. The ClamAV detection and ML classifier also flagged this file as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to redirect users to potentially malicious content or for SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5377

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/123?utm_term=manga+studio+character+templates
    • https://mejibafizafev.weebly.com/uploads/1/3/4/0/134042836/718f3c498d812d3.pdf
    • https://xavelimati.weebly.com/uploads/1/3/5/2/135298033/574359.pdf
    • https://nevofegef.weebly.com/uploads/1/3/4/8/134851200/bebataj.pdf
    • https://devubavoxonor.weebly.com/uploads/1/3/2/7/132741482/melufizinokuzo-nexumulagebed.pdf
    • https://sijetuso.weebly.com/uploads/1/3/4/4/134499475/nuvuvulapi-liparawetew.pdf
    • http://wijetaz.mypressonline.com/polexiti.pdf
    • http://zumewidife.mygamesonline.org/foturikogukexomeji.pdf
    • https://bixevojug.weebly.com/uploads/1/3/0/7/130739122/aea9ab.pdf
    • https://cdn-cms.f-static.net/uploads/4384464/normal_600cbc21eea62.pdf
    • https://static.s123-cdn-static.com/uploads/4386335/normal_5ff1555360395.pdf
    • http://dopadogexegox.22web.org/writing_advice_for_beginners.pdf
    • https://bupefozatige.weebly.com/uploads/1/3/4/3/134384552/gumopidik_kusemoj_taxizazof.pdf
    • http://gazagidumow.mygamesonline.org/logic_pro_10.1_system_requirements.pdf
    • https://cdn-cms.f-static.net/uploads/4411691/normal_6044915b6c312.pdf
    • http://pinoxisar.iblogger.org/pl_sql_tutorial_point.pdf
    • http://tapozifokun.mywebcommunity.org/kumegasoni.pdf
    • https://cdn-cms.f-static.net/uploads/4471985/normal_601771cd1532d.pdf
    • https://vefavufarexuba.weebly.com/uploads/1/3/4/3/134315694/b02606d8ee6c.pdf
    • https://cdn-cms.f-static.net/uploads/4469350/normal_60306ec7bdab8.pdf
    • https://lubagevaruzazej.weebly.com/uploads/1/3/2/7/132712663/32eb9c6b7.pdf
    • https://uploads.strikinglycdn.com/files/b674f1f9-c9d6-4cb4-b85e-c84954621919/are_the_vampire_diaries_books_the_same_as_the_show.pdf
    • http://dinajamabas.epizy.com/cyberpunk_2077_xbox_one_review_ign.pdf
    • https://uploads.strikinglycdn.com/files/3418ac30-3c6f-46a1-99cd-0376d0f99a6d/why_is_my_amazon_tv_remote_not_working.pdf

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