Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca28ca17f426c969…

MALICIOUS

PDF

44.3 KB Created: 2021-08-21 16:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 6f1b18d14516ef8f8158b62ec7c2fdd4 SHA-1: cfb42ff86830425ad643b50bf9bab3f8d2320be6 SHA-256: ca28ca17f426c9694a6a667bae8e258cdfdb8511ebadb0d54f3ba7ecd5dc63a6
94 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. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2956

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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. 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://stillwaiting.org/userfiles/file/6338432661.pdf In PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/380dd690a904a8f01e288c7706f0b9a3/bonexejejuwowezanodifu.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160e129fc269a7---komifuxip.pdfIn PDF document text
    • http://novichiha.ru/pic/file/jiparobavugufav.pdfIn PDF document text
    • https://eternalbliss.net/file/nunazuzowaxutoxozosafogo.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6ccc421ab---2628477877.pdfIn PDF document text
    • http://blossomtour.net/FileData/ckfinder/files/20210728_766950B428290DA1.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=fouad+whatsapp+latest+version+apk+download+2020+septemberPDF link annotation

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