Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d8c3b0beb228f92…

MALICIOUS

PDF

46.0 KB Created: 2021-09-18 16:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: fbd4950acfaed23aaa346d917f4e4110 SHA-1: 26a03788655ea7bfcbcddfc7c2dbb336141fd2ba SHA-256: 1d8c3b0beb228f9218e0d57d5b95dce4ccedb76eb11bbad148c85d55ece44a85
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated maliciousness. It contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting an attempt to distribute malicious content or phish users. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6676

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 http://alpanelektrik.com/depo/sayfaresim/file/5171219727.pdf In PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac99f18cd1---somaxa.pdfIn PDF document text
    • http://ehoron21.mn/uploads/files/79713273108.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/files/numofagokox.pdfIn PDF document text
    • https://ntpuvoice.com/ckfinder/userfiles/files/13090026314.pdfIn PDF document text
    • https://kalashad.com/userfiles/file/5302773792.pdfIn PDF document text
    • http://bigyikesmedia.com/home/xtremweb/public_html/consultinstitute/web/upload/files/24894259580.pdfIn PDF document text
    • http://scarpatti.com/files/60601864240.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/resopoxopifebiw.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613c3b2bc55e7---terisaviwenodop.pdfIn PDF document text
    • http://alphanaturehk.com/userfiles/file/gumegebawapevepepojuti.pdfIn PDF document text
    • https://homeuu.biz/upload/ckeditor/pages/files/52425550995.pdfIn PDF document text
    • http://atrsara.ir/resource/files/87734770984.pdfIn PDF document text
    • https://e-fasteners.eu/media/file/tubadidewapomalifaded.pdfIn PDF document text
    • https://stepweystudy.com/ckfinder/userfiles/files/78119246130.pdfIn PDF document text
    • http://ipai-bg.eu/img/file/gulakuletisa.pdfIn PDF document text
    • http://czyxchem.com/upload/files/88419509947.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents/files/gaberope.pdfIn PDF document text
    • http://erbamedica.org/userfiles/files/11157462331.pdfIn PDF document text
    • https://anitacalderon.com/ckfinder/userfiles/files/wotejefalaxerugoneniso.pdfIn PDF document text
    • http://ttmm.co.jp/ckfinder/userfiles/files/dezezigu.pdfIn PDF document text
    • http://skipjackpoke.com/ckfinder/userfiles/files/sumexetegotamabit.pdfIn PDF document text
    • http://xn--12cxa2boh7cd6g7anex5omh.com/ckfinder/images/files/kizimikaxokavunelol.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=quadratic+function+with+maximum+valuePDF link annotation

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