Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a6d227cdf09e230…

MALICIOUS

PDF

54.0 KB Created: 2021-09-22 20:56:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: b192922257e73d6609d6135bbe8a22f4 SHA-1: 0257e4a4b37b8e894a136ea63d8aa515c93383d2 SHA-256: 2a6d227cdf09e23039bce154083914a50c57366181f8a89b723d7ac34410095a
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links on low-reputation hosting, suggesting a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the redirection or download process, contributing to the overall malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8133

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://drafthe.ru/uplcv?utm_term=kingdom+rush+download+apk PDF link annotation
    • http://irodaszer.lukinserv.hu/file/95443531875.pdfIn PDF document text
    • http://www.portaldasfreguesias.com/portugal/vianadocastelo/vianadocastelo/geraz_do_lima_sta_maria/ckeditor/ckfinder/file/nejifazebesen.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/goxorarojopu.pdfIn PDF document text
    • http://glovimex.com/uploads/ckfinder/files/41382921133.pdfIn PDF document text
    • http://savages.lu/imagesRTE/files/81291858684.pdfIn PDF document text
    • http://paulgraphics.paulsfashion.in/files/xanenidipepudidadema.pdfIn PDF document text
    • http://www.cerel.eu/images/wyswig_images/file/93770118237.pdfIn PDF document text
    • https://youkuvpn.com/upload/files/vipobazeji.pdfIn PDF document text
    • http://tuyothuyluc.vn/webroot/img/files/lufulivariviga.pdfIn PDF document text
    • https://j26clean.com/upload/files/8057739024.pdfIn PDF document text
    • http://xetaihyundai.net/upload/files/67224451478.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/5hf5pblcrfrooe6aakhn3qbi06/21686747312.pdfIn PDF document text
    • http://matsusushionline.com/uploads/files/sexenerejadu.pdfIn PDF document text
    • https://sistemkabin.com/ckfinder/userfiles/files/zokekuvojatitonajoz.pdfIn PDF document text
    • https://pkmoscow.ru/ckfinder/userfiles/files/29389121377.pdfIn PDF document text
    • https://iwanbim.iwan.co/userfiles/files/zawuluwuriromukafetema.pdfIn PDF document text
    • http://wcsps.com.tw/ckfinder/userfiles/files/51715529500.pdfIn PDF document text
    • https://magnanelli.com/userfiles/file/redumu.pdfIn PDF document text
    • http://xn--2o2b17g32e8xisqq.com/userData/board/file/daxokafisilejolewafunosu.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/71620152193.pdfIn PDF document text
    • http://cdkuys.handysociality.com/upload/files/42594069887.pdfIn PDF document text