Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aae75636bd720b5…

MALICIOUS

PDF

54.7 KB Created: 2021-09-21 11:22:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: e1449712b6f86f9c9d4a810a6032ae41 SHA-1: 430951bccb604b29487ecd2a54a431e3e0aaf22f SHA-256: 4aae75636bd720b553336aa86b56f15b3fd84a906a36e6ef724df11f7c470f00
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of numerous embedded URLs, many pointing to disposable domains and configured as a link farm, strongly suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7367

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://shengnabei.com/uploadfile/file///2021091219585121.pdf In PDF document text
    • http://messtores.ca/fck_user_files/file/vebar.pdfIn PDF document text
    • http://smalternatywa.pl/media/upload/files/e7c07826af46511bc863f80d387098ad.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/fvhqshd8l54ggkj787j3hhmsli/4146969529.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c555a1f7e---84408157462.pdfIn PDF document text
    • http://dataprint.ie/uploads/file/88668507775.pdfIn PDF document text
    • https://sma-dfgg.org/site/admin/file/98043658212.pdfIn PDF document text
    • https://feldmann.pl/userfiles/file/jojevawerogisomi.pdfIn PDF document text
    • http://china-zub.ru/userfiles/file/11247903515.pdfIn PDF document text
    • http://avstralianature.ru/ckfinder/userfiles/files/74761751112.pdfIn PDF document text
    • https://berettyotv.hu/userfiles/files/fejapazumoguzireda.pdfIn PDF document text
    • https://cardolf.ro/files/8395893503.pdfIn PDF document text
    • http://meimagedance.tw/ufiles/files/50490946070.pdfIn PDF document text
    • http://motivationandmomentum.net/ci/userfiles/files/10739028547.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/takafipafopojaf.pdfIn PDF document text
    • http://classtool.info/upload/files/98289769225.pdfIn PDF document text
    • http://hijoin.hu/editor_up/15009624454.pdfIn PDF document text
    • https://jnvhardoi.org/ckfinder/userfiles/files/55866793877.pdfIn PDF document text
    • https://goez3.com/10005001208290177/ckfinder/userfiles/files/56095457136.pdfIn PDF document text
    • http://dainindo.com/Uploads/userfiles/files/banatanukosixitavogisaf.pdfIn PDF document text
    • http://ersenergy.com/UserFiles/file/fepogasa.pdfIn PDF document text
    • https://valstybestarnyba.com/upckfinder/files/jepawe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=pokemon+comic+book+pdfPDF link annotation