Malicious PDF — malware analysis report

Static analysis result for SHA-256 f58cf327f3f4e3a4…

MALICIOUS

PDF

58.3 KB Created: 2020-12-18 16:53:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4f43e497ddd2edee462ea6d289e4f37e SHA-1: 9c92df214812919103c013e8af61585d2b10dda9 SHA-256: f58cf327f3f4e3a4765cdb03d49c3e18615e722ade0236c9950538095bc2a187
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by multiple heuristics, including a ClamAV detection for Pdf.Phishing.Trojan and an ML classifier. It contains an embedded URI pointing to a suspicious URL, which is likely part of a phishing or social engineering attempt. The document body, though heavily obfuscated, suggests a lure related to 'cyber awareness challenge' to direct users to the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8553

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://trafffi.ru/strik?utm_term=cyber+awareness+challenge+2020+what+is+whaling PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378608/normal_5f8bddfd9253e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415935/normal_5fd7a383db339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413973/normal_5fd7d8acd62d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472764/normal_5fb5373eaab54.pdfIn PDF document text
    • https://jezagegilefu.weebly.com/uploads/1/3/4/3/134307882/893f3090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417220/normal_5f9ce4b2218b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404107/normal_5fa7cfd556802.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f8f14f375fc0.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/condensation_polymerization_reaction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ace52276-bb37-47b8-9e87-178865a12978/56260011541.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/gogelasibupupudovevopad.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/ginudi.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/ammyy_admin_software_for_windows_10.pdfIn PDF document text

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