Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ef3da38ecd4c6d…

MALICIOUS

PDF

75.3 KB Created: 2021-05-10 20:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: b236e039dbce8569aa614a972ce81e51 SHA-1: e30b9dd9a1f49db126669b33b3d19e399f215aae SHA-256: 02ef3da38ecd4c6d4781ca8482cc9ef0bf6731773dcde5358b6a81ef86132b81
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with a primary one pointing to 'soxebez.ru', suggesting a redirection to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to a common household task, intended to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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://soxebez.ru/strik?utm_term=how+to+remove+light+bulb+for+hampton+bay+ceiling+fan PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387918/normal_6059b748866c1.pdfIn PDF document text
    • http://clobuss.ru/sago_mini_pet_cafe_free_downloada2yg4.pdfIn PDF document text
    • http://pagavopalubutu.scienceontheweb.net/mesajelale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451744/normal_6000614e44a2c.pdfIn PDF document text
    • https://sepolememu.weebly.com/uploads/1/3/5/3/135325534/2719650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494674/normal_604ee20dd9dfb.pdfIn PDF document text
    • https://xuxulavadimuxa.weebly.com/uploads/1/3/4/2/134234789/6685643.pdfIn PDF document text
    • http://kinokaiff.space/cheat_sheet_sqlalchemy82yua.pdfIn PDF document text
    • http://tumbaa.space/120737276hgsh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413843/normal_6002c56cc5d9b.pdfIn PDF document text
    • http://in-step.shop/73754010470nc9bo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465941/normal_601b2539a04f0.pdfIn PDF document text
    • http://redirunna.xyz/ielts_preparation_test_with_answers9rkzj.pdfIn PDF document text
    • https://nidegezepon.weebly.com/uploads/1/3/4/6/134650885/671573.pdfIn PDF document text
    • http://ralugugifoxatir.scienceontheweb.net/belajar_bahasa_inggris_anak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2720c3f6-5773-4344-991a-22588aa71d28/matplotlib_pie_chart_cheat_sheet.pdfIn PDF document text
    • http://moxosutemow.onlinewebshop.net/muwurotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b20d551-7cb4-4959-8bba-04327f58e24f/best_obd2_app_2020.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_off0000e747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE747 5604 bytes
SHA-256: 2b8e46959c802fbba3cee47fda12241dd801ffff80034c71a5ead8bf8025d4a4
font_01_sfnt_off0000fa4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4D 10948 bytes
SHA-256: 439dc59a7374c916bebeced56634345b09b27b858073a17ae2d9481619ddffa2

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