Malicious PDF — malware analysis report

Static analysis result for SHA-256 4368b84eee914ea5…

MALICIOUS

PDF

67.6 KB Created: 2021-01-08 09:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5811129acc6d4b7ac61add982958e3f0 SHA-1: 944fc4c4e78a8c82b1678fb7809a80873ab5ca6f SHA-256: 4368b84eee914ea5e202f9916776dcb3a9b0069ab0fbb3c579bbd87d464a9e3b
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a significant number pointing to known malicious redirectors and a link farm. The ClamAV detection and ML classifier further indicate malicious intent, likely to redirect users to phishing or malware distribution sites. No scripts were extracted, but the structure and embedded URLs strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8617

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cctraff.ru/aws?utm_term=five+bases+of+power+pdf In PDF document text
    • https://poxobavu.weebly.com/uploads/1/3/1/4/131453713/5494272.pdfIn PDF document text
    • https://zekigoduse.weebly.com/uploads/1/3/4/3/134336209/badenesepaju_guxidizolexu.pdfIn PDF document text
    • https://letitunonagafi.weebly.com/uploads/1/3/4/4/134494227/namari.pdfIn PDF document text
    • https://cdn.sqhk.co/xidatelo/ifhbsgj/vokugabexakidemevewamik.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/gujitodona-gutodeta-dobutakiv-zarenuripokix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b96eb4c5-25e4-43f6-acfe-833e83ba40b4/anoxic_encephalopathy_nursing_care_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0b5dac6-149e-48f1-b6d1-0aff374df0ab/jeff_kinney_address.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/20018589639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7a23c92-76ba-4e31-8e73-b524a090219c/34631912416.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/zonodowarumokaxobikafefif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8b35930-313a-43be-a6d5-dfc2f778265d/nursery_rhymes_songs_free_download_mp4.pdfIn PDF document text

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