Malicious PDF — malware analysis report

Static analysis result for SHA-256 c936204b3d0b1c64…

MALICIOUS

PDF

42.3 KB Created: 2021-09-10 20:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: afefedb7bfce8705962a96c517756066 SHA-1: 5e374c72359f8165890b065e174b0ac2136cde6f SHA-256: c936204b3d0b1c64f064f97ff7675ed83506d53a199f550e83b02221344ec2e4
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 0.7814

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
  • 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 http://argol-editions.fr/userfiles/file/regozijewikirizeza.pdf In PDF document text
    • http://neodentpetrosino.it/userfiles/files/nemexu.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e2bad80a7---30705954105.pdfIn PDF document text
    • http://nenorm.com/files/files/juvenen.pdfIn PDF document text
    • https://cobrawire.com/userfiles/files/162090284.pdfIn PDF document text
    • http://ahkkpcm.org/userfiles/70516837683.pdfIn PDF document text
    • http://clairerolo.com/userfiles/file/79069094427.pdfIn PDF document text
    • http://misbahelmudii.org/ckfinder/userfiles/files/29968250218.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134f6c1cb7c6---rizudibixuxo.pdfIn PDF document text
    • http://www.kymenhome-etsinta.net/tiedostot/files/17113571357.pdfIn PDF document text
    • http://wittlich-luexem.de/userfiles/file/67128275458.pdfIn PDF document text
    • http://kozszemle.hu/uploads/files/zevukixoremapumopoj.pdfIn PDF document text
    • http://aroma-es.site/yamituki-n/uploads/files/zevivalug.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/makafajaluwawukapoz.pdfIn PDF document text
    • https://jamurgoreng.net/contents/files/39526234512.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/bigemaz.pdfIn PDF document text
    • http://hanart21.com/files/userfiles/file/11800622234.pdfIn PDF document text
    • http://phdpecs.hu/userfiles/files/1219853700.pdfIn PDF document text
    • https://www.jaegeraviation.com/ckfinder/userfiles/files/49375334702.pdfIn PDF document text
    • https://songhongresort.com/img/files/78781164797.pdfIn PDF document text
    • https://lombardpruszkow.pl/local/userfiles/file/senesunarowezojin.pdfIn PDF document text
    • http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/71330920630.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=word+that+starts+with+s+and+ends+with+yPDF link annotation