Malicious PDF — malware analysis report

Static analysis result for SHA-256 1406b4a04e74c4f0…

MALICIOUS

PDF

45.6 KB Created: 2021-09-09 15:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 4f3afde521bab89cc33dbf8aadc6d360 SHA-1: 79efb852e0376bc339ed87699ae3bba851db8bbf SHA-256: 1406b4a04e74c4f0de963dff9fe9cdeb3322fbf914fb6ace89f3f075caf31db0
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, indicating a link farm designed to obscure the true destination. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The embedded JavaScript is likely used to facilitate the download or redirection to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7521

Heuristics 5

  • 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.
  • 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 http://ordinate-ltd.com/file_media/file_image/file/27355897022.pdf In PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/t34sonn50dmlm9nte05tqvgrfa/wijer.pdfIn PDF document text
    • https://danfort.lv/userfiles/file/46702721041.pdfIn PDF document text
    • https://motodubai.com/uploaded_images/files/3093932563.pdfIn PDF document text
    • http://juncheng.tw/upload/files/76410098710.pdfIn PDF document text
    • https://empezo.xyz/js/ckfinder/userfiles/files/44340460026.pdfIn PDF document text
    • http://packturf.fr/files/xasifotaxamalugetenoniti.pdfIn PDF document text
    • https://www.aukuras.org/ckfinder/userfiles/files/15252560674.pdfIn PDF document text
    • http://www.ccengis.be/applications/ckeditor/addons/ckeditor/ckfinder/userfiles/files/56221136095.pdfIn PDF document text
    • http://chongthamnguoc.vn/img/files/2196028851.pdfIn PDF document text
    • http://murielbellhomes.com/userfiles/files/xefiwemunafaxevarusevafa.pdfIn PDF document text
    • http://halmar.info/userfiles/file/dotejudejo.pdfIn PDF document text
    • https://fcksa.com/ckfinder/userfiles/files/13510235025.pdfIn PDF document text
    • http://trungtamsangloc.vn/uploads/ck_upload/files/12836330123.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/97031496888.pdfIn PDF document text
    • http://mutamobilya.com/images_upload/files/6216156254.pdfIn PDF document text
    • http://architettotoma.it/userfiles/files/62319478661.pdfIn PDF document text
    • http://gemwishrs.com/ckfinder/stones/files/28410539572.pdfIn PDF document text
    • http://tongshengchem.com/ckfinder/userfiles/files/suzugixosi.pdfIn PDF document text
    • http://marjoleintje.nl/include/userfiles/52870620694.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136387a993da---zakude.pdfIn PDF document text
    • http://osc-pribor.ru/products_pictures/file/83434256752.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/sevilikodozisojuju.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=gta+san+andreas+online+android+apkPDF link annotation