Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1d914aba089fad6…

MALICIOUS

PDF

62.5 KB Created: 2021-10-08 02:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 2843a46fc4ab9deb7cc8e1ac2f23dd4a SHA-1: d7217daf23d302393a82af03126d7fe989a8aa37 SHA-256: f1d914aba089fad631ad6099f97e34bfa44b1832158b5103c1a4d636707e796f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to various domains, suggesting a link farm or phishing lure. The PDF structure and embedded URIs, combined with the heuristic flagging it as a link farm on disposable hosting, strongly suggest it is designed to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7578

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://coretry.ru/uplcv?utm_term=produce+manager+resume PDF link annotation
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615735b64037b---89201752684.pdfIn PDF document text
    • http://teamwork-poetschke.com/ckfinder/userfiles/files/rosivuxonodomowapugag.pdfIn PDF document text
    • http://queenart.kr/userData/board/file/zarabajagiremijefam.pdfIn PDF document text
    • https://cicasoftavukatwebsitesi.demowebsiteleri.com/upload/files/todugiguwunug.pdfIn PDF document text
    • http://sipzip.com/userfiles/file/vanitesejufetoluvuxux.pdfIn PDF document text
    • http://honda-vo.com/upload/file/45534981551.pdfIn PDF document text
    • http://gostinica-domodedovo.ru/files/getubazerukefuj.pdfIn PDF document text
    • http://chinawin-consult.com/userfiles/mulokafe.pdfIn PDF document text
    • http://medical-1669.com/userfiles/files/60945223281.pdfIn PDF document text
    • https://drjou-vc.com/upload/files/1462546089.pdfIn PDF document text
    • http://ingmontagna.com/userfiles/files/lodaxinigoxuwifuxoxak.pdfIn PDF document text
    • http://topnotchimports.com/ckfinder/userfiles/files/27055952152.pdfIn PDF document text
    • https://net-mex.hu/ckfinder/userfiles/files/76138244616.pdfIn PDF document text
    • http://ih-consultant.com/ckfinder/userfiles/files/gorepexoju.pdfIn PDF document text
    • http://pronobile.com/catalog/file/mepawosewoxagixo.pdfIn PDF document text
    • https://jechrina.gr/FCKeditor/userimages/file/xepasupubexezidokivud.pdfIn PDF document text
    • http://kramnyca.info/img/upload/editor/file/vewujakija.pdfIn PDF document text
    • http://humidorio.de/ckfinder/userfiles/files/19357735692.pdfIn PDF document text
    • http://vinhthuan.com/upload/files/xejijisi.pdfIn PDF document text

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