Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d63da0233f826cd…

MALICIOUS

PDF

48.0 KB Created: 2021-09-11 15:51:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d2d25bf7837fe861d80f21eb18ea5cfd SHA-1: d59c490ce5c981977b110c34564ee9cae22e17b0 SHA-256: 4d63da0233f826cd556039953ffdc3685e60f86a1d525ef7fc3c67ad171a711c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs, many of which point to suspicious PDF files on various domains, suggesting a link farm designed to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple external URIs and a link farm heuristic points towards an attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7691

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 https://koratspring.com/upload/file/dolorekow.pdf In PDF document text
    • http://frangarcia.eu/upload/file/dajuvap.pdfIn PDF document text
    • http://eros-arena.com/eros/userfiles/file/kizugulip.pdfIn PDF document text
    • https://hinodanang.com/uploads/image/files/susixovidopijavojov.pdfIn PDF document text
    • http://pneusmarene.it/images/file/nijumuz.pdfIn PDF document text
    • https://ever-progress.com/upload/files/kuzimilikowutopesugilufi.pdfIn PDF document text
    • https://rh-h1tapi-turbo.com/contents/files/24264858880.pdfIn PDF document text
    • http://onthebroadway.com/CPD/adminpanel/upload/file/21034150682.pdfIn PDF document text
    • http://fields-on-earth.com/images/blog/file/pajesok.pdfIn PDF document text
    • http://boldino-hotel.com/ckfinder/userfiles/files/wofedokabadofomiginowuras.pdfIn PDF document text
    • http://xn--nellieskche-0hb.de/userfiles/file/pezuzebe.pdfIn PDF document text
    • http://emachn.com/data/attachment/file/nunawigunosomurutu.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eab0d2d7a2---sizomibuganugot.pdfIn PDF document text
    • http://drtamerturan.com/file/wefosakevatik.pdfIn PDF document text
    • http://aedjtjdshbf.pretty-match.com/upload/files/92021622258.pdfIn PDF document text
    • https://www.fyna.com.au/application/third_party/ckfinder/userfiles/files/31432465040.pdfIn PDF document text
    • http://tavio.su/files/file/82020019705.pdfIn PDF document text
    • https://santa.my/images/users/00000000/files/japanuwenolenovomefug.pdfIn PDF document text
    • http://aktifithalat.com/resimlerfiles/63370758769.pdfIn PDF document text
    • https://peterdegendt.be/file/wusudofoforovekegutofim.pdfIn PDF document text
    • http://cafegreenwichvillage.com/uploads/files/revabalabon.pdfIn PDF document text
    • http://beiwendq.com/userfiles/file/xisixiritepivi.pdfIn PDF document text
    • http://roland-toys.eu/userfiles/file/81239535654.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=financial+management+brigham+13th+edition+solution+manual+pdf+freePDF link annotation