Malicious PDF — malware analysis report

Static analysis result for SHA-256 514ff6c5aa51cb4a…

MALICIOUS

PDF

66.3 KB Created: 2021-03-02 14:23:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: ee64d9c57049b91a014417908bcc4c67 SHA-1: f0bb01b87bd888c8e6b31cfd7e284248042eb562 SHA-256: 514ff6c5aa51cb4aba5757a31c300a55d8236b17390e0187b14e514f132c0ca7
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as a phishing trojan. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, contains keywords related to 'flight trainer' and 'pandaria', likely a lure to direct users to the malicious URL https://mezovuduw.ru/award?keyword=flight+trainer+in+pandaria.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://mezovuduw.ru/award?keyword=flight+trainer+in+pandaria PDF link annotation
    • http://floradoma.net/21124466429ep5x4.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/ieqKhiO/latelegosasimudo.pdfIn PDF document text
    • http://vibolofisef.mywebcommunity.org/how_to_clean_kenmore_front_load_washer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393183/normal_5fc8351c0159b.pdfIn PDF document text
    • https://velalozelo.weebly.com/uploads/1/3/4/4/134498802/tizojopuguvemajanu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391319/normal_5feeb1d305922.pdfIn PDF document text
    • http://workbykoder.xyz/dupamawefeuj979.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366009/normal_600485ab909b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416786/normal_602ae742cddfe.pdfIn PDF document text
    • https://pokukumujipuk.weebly.com/uploads/1/3/1/8/131856200/firopigirulu_wuxularimig_xewanugetogeje_kuzaraforu.pdfIn PDF document text
    • http://cherrypimp.online/nipebyu93t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://galiwasik.rf.gd/south_eastern_freeway_traffic_report_melbourne.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/65350816353.pdfIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/asus_m5a97_le_r2.0_motherboard_drivers.pdfIn PDF document text
    • http://jufafiwosekugon.rf.gd/mustang_owners_forum.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AE 4996 bytes
SHA-256: 47d08284e6e4a6b14cdda5080bb9a3a1264e359ef1cbb6c092d50fbaaede31f6
font_01_sfnt_off0000d8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A1 10396 bytes
SHA-256: 1ba5ad18254516683564cba0cef5955d85e01eae3b8954d9745ab3a4b8f5030d

Open this report in the interactive analyzer, or submit your own file for analysis.