Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67da5f462e5a247…

MALICIOUS

PDF

84.6 KB Created: 2021-02-13 11:44:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 956ee83ca59fbe6412198335534e9a8e SHA-1: 77210c09c086458239a9204299acff5a13351dd2 SHA-256: c67da5f462e5a24757dfbdc3e0598e276240082faa0749e34f337ae330017259
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or redirect the user to a phishing site. The document body, though partially corrupted, suggests a lure related to 'human karyotyping form answers'. No scripts were extracted, but the presence of an external URI and the malicious verdict strongly suggest an attempt to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9453

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/aws?utm_term=ward%2527+s+human+karyotyping+form+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472182/normal_5ff16721e4b75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402963/normal_5ff8beb41fccf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5fe3ae1b42ce6.pdfIn PDF document text
    • https://cdn.sqhk.co/wirumedaba/hiigfmK/gifibeniwojasi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487197/normal_6008829fb023a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449627/normal_600bc4c206a39.pdfIn PDF document text
    • http://pebenuxotuk.epizy.com/c_function_template_specialization_vs_overloading.pdfIn PDF document text
    • http://tamazodatitemi.epizy.com/strathclyde_pension_fund_actuarial_valuation_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/aakash_aiats_test_1_answer_key.pdfIn PDF document text
    • http://zorogeloma.epizy.com/are_you_interested_in_me_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/89903080009.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/assam_cabinet_minister_list_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/33014075485.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/6176015861.pdfIn PDF document text

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