Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70630c93a0335e7…

MALICIOUS

PDF

48.4 KB Created: 2021-09-14 05:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: b1b94015e9409e22bae901e8e63faf0c SHA-1: 24eb8b6087a2b2c5cdf4647ba3c22283867366c1 SHA-256: a70630c93a0335e7e5648f39833069c32353014dd8f255ca1f1d16c4c36faede
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF document identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing attempt. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a high volume of links across distinct hosts, a common tactic for distributing malware or leading users to phishing sites. No scripts were extracted, but the overall structure and heuristics point towards a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5648

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://coherence.cz/userfiles/file/54638794967.pdf In PDF document text
    • http://dtyxbpzx.com/filespath/files/20210912200816.pdfIn PDF document text
    • http://simonkuehner.de/gfx/userfiles/files/64167000058.pdfIn PDF document text
    • https://girl0229960192.com/upload/users/files/lejon.pdfIn PDF document text
    • http://ore-processing.ru/d/files/mevupimulawatuwawor.pdfIn PDF document text
    • http://fitviewer.de/files/file/zovenafalusam.pdfIn PDF document text
    • http://www.cemeba.com/uploads/ckfinder/files/bibixaronebe.pdfIn PDF document text
    • http://xlpe.net/Images_upload/files/topodopegasew.pdfIn PDF document text
    • http://bitree.net/ckfinder/userfiles/files/wazatadokajesosogu.pdfIn PDF document text
    • http://kbautotech.com/board/datafiles/imagefile/foxugol.pdfIn PDF document text
    • https://theipbuzz.com/images/file/23716697450.pdfIn PDF document text
    • https://totalsewa.com/userfiles/file/vutepomajoraj.pdfIn PDF document text
    • http://isemya.by/modules/ariol/static/ariol/ckfinder/files/sesovu.pdfIn PDF document text
    • https://hyosungulf.com/uploads/file/raturu.pdfIn PDF document text
    • http://jiin-torng.com/uploadfiles/20210905011458.pdfIn PDF document text
    • http://iact2001.com/userData/board/file/rexerewelunodipefewugoku.pdfIn PDF document text
    • https://foursservices.com/nbloom/fckuploads/file/wotebexizikad.pdfIn PDF document text
    • https://maria-galland.ru/files/file/53588118051.pdfIn PDF document text
    • http://zkpower.net/upload/files/wilozejazuj.pdfIn PDF document text
    • http://sochi-vitrazhi.ru/ckfinder/userfiles/files/bovedoxudebalemifemos.pdfIn PDF document text
    • http://conhantaoankhanh.com/webroot/img/files/puxoxiwotu.pdfIn PDF document text
    • https://poulinstrapscan.com/userfiles/file/kafoziwixonafep.pdfIn PDF document text
    • https://mountainbrookbuilders.com/home/mountain/public_html/ckfinder/userfiles/files/gebokateb.pdfIn PDF document text
    • http://lateonsettay-sachs.org/userfiles/file/75189260720.pdfIn PDF document text
    • https://ateliersmq.com/pevron/www/img/file/26060197844.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=thoptv+app+live+tvPDF link annotation