Malicious PDF — malware analysis report

Static analysis result for SHA-256 214cd58baad850b6…

MALICIOUS

PDF

49.1 KB Created: 2021-08-31 03:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 6a52cd25c14a525987650e9801baa98d SHA-1: e80374531df9bd416311ffdcde32b9c443b8b1fc SHA-256: 214cd58baad850b6818bb21ec261f46c0722db2c9a7502e0290dfe06cc6d9230
124 Risk Score

Malware Insights

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

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://futuresbuilder.net/dayafter/uploadimages/newsimages/file/fuxolusupolo.pdf In PDF document text
    • http://zulassung4you.de/bilder/file/97284890240.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/16099efd3bc3f4---siwabugabudugapifiw.pdfIn PDF document text
    • https://thefencedocumentary.com/adminfiles/file/16933012683.pdfIn PDF document text
    • http://e-sportis.com/images/upload/56304001427.pdfIn PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/b1d89a47bef6f0bf8b7b370d81da50c5/33048732086.pdfIn PDF document text
    • http://opusbiz.kr/data/editor/file/101932196960ee4a5e55523.pdfIn PDF document text
    • http://hanlacsclub.com/ckupload/files/sijiravudijavo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=11th+public+exam+time+table+2021PDF link annotation

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