Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb72ef7b460491a…

MALICIOUS

PDF

44.3 KB Created: 2021-10-06 23:52:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: d5afc3d32d15e2b8cda47f38096ed717 SHA-1: efb3d2057a9eda729ea0bf9f9378ca5dbb780c78 SHA-256: 8eb72ef7b460491a57d0b81c044eb47a7726d4aff5d4c33ba29311e4de4c43e5
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, with one heuristic specifically identifying it as a link farm on disposable hosting. The document body is heavily obfuscated, preventing analysis of its direct content, but the overall structure and heuristics strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://geredekombiservisi.com/userfiles/file/58194458202.pdf In PDF document text
    • https://sweetburden.com/upload/users/files/93668638221.pdfIn PDF document text
    • https://masihpt1.com/contents/files/mogefanabawegawafezofi.pdfIn PDF document text
    • http://radtel-sport.pl/userfiles/file/91239801937.pdfIn PDF document text
    • http://schuetzenfest-hemeringen.de/ablage/userfiles/files/taxogavexud.pdfIn PDF document text
    • http://narcisse.sk/editor_uploads/files/mofewowotijub.pdfIn PDF document text
    • http://simpelms.nl/userfiles/files/xufawetoleso.pdfIn PDF document text
    • http://xn----9sbkvfu2aex3d.xn--p1ai/ckfinder/userfiles/files/25280648464.pdfIn PDF document text
    • http://fratellilongoni.com/userfiles/files/sabasufet.pdfIn PDF document text
    • https://www.totalblissbeauty.com.au/application/third_party/ckfinder/userfiles/files/novojoxulogoxavanupugifo.pdfIn PDF document text
    • http://hairfibers24.com/upload/file/70175562760.pdfIn PDF document text
    • http://manchetenewsms.com.br/ckfinder/userfiles/files/68656165065.pdfIn PDF document text
    • http://sxhk365.com/uploads/file///7249205634.pdfIn PDF document text
    • http://indecomavo.pl/userimg/inc/74209409129.pdfIn PDF document text
    • http://magnumprint.ru/upload/files/rinesevepaxuxanofadojer.pdfIn PDF document text
    • https://navliecky.net/userfiles/file/kedixin.pdfIn PDF document text
    • http://studiozammuner.eu/userfiles/files/87048080304.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cbb3b64586---68154045580.pdfIn PDF document text
    • https://lean-ds.com/upload/editor/file/zigutomij.pdfIn PDF document text
    • http://herfon-machinery.com/images/ckfinder/files/20210921200002.pdfIn PDF document text
    • http://argol-editions.fr/userfiles/file/vulakavafilanuranukuk.pdfIn PDF document text
    • http://pune-india.info/userfiles/file/12501740450.pdfIn PDF document text
    • http://cermak-expo.cz/data/files/file/41369435506.pdfIn PDF document text
    • https://willes-gb.com/uploads/files/202109050401378564.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=i+saw+the+lord+seated+on+the+throne+chordsPDF link annotation