Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc7fe2bcabe3278a…

MALICIOUS

PDF

75.4 KB Created: 2021-02-28 04:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 818057866cbd55786289bca232c334e2 SHA-1: 59b5f2de0061fa3162473ecbcb10c57582d3970d SHA-256: bc7fe2bcabe3278a7b80d06262046784fd2f9869657a607f4090ea1f3b474bed
126 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous external links, with one prominent URL pointing to 'mezovuduw.ru', suggesting a phishing or malware distribution lure. The PDF structure and embedded content, though heavily obfuscated, are consistent with attempts to redirect users to potentially harmful sites.

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/wix?keyword=tauren+druid+color+guide PDF link annotation
    • http://gagelepapu.22web.org/73008985993.pdfIn PDF document text
    • http://ridovise.sportsontheweb.net/safety_not_guaranteed_scene.pdfIn PDF document text
    • http://theraisins.pro/78333555707et4oz.pdfIn PDF document text
    • http://mavisuvegepufi.iblogger.org/32857178015.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/97875373608.pdfIn PDF document text
    • https://cdn.sqhk.co/lijusute/hhjiLXQ/traffic_accident_investigation_equipment.pdfIn PDF document text
    • http://buloshnaya.site/interview_questions_for_employers_templatecesxp.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/4jdgfha/87612723185.pdfIn PDF document text
    • http://trudogoliya.online/kung_fu_the_legend_continues_episodeshmjoo.pdfIn PDF document text
    • http://discount50it.pro/psicologia_educativa_ausubelz9qjb.pdfIn PDF document text
    • http://reduslim-officialsite.site/juz_amma_sudais_free_download8vw7z.pdfIn PDF document text
    • http://xolokukifimiv.sportsontheweb.net/89679972290.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/cNihIja/idle_world_end_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://reniwen.rf.gd/sazatanom.pdfIn PDF document text
    • http://sudimomovaw.epizy.com/rejujajafazovaj.pdfIn PDF document text
    • http://nifiloxoburufi.rf.gd/what_is_the_mood_in_macbeth_act_1_scene_1.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_off0000ecfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFE 4880 bytes
SHA-256: a4636444b7ed47e1e87d24ffaf3172c92640690cc2216ad3e85cf58537ac7a58
font_01_sfnt_off0000fda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA4 10216 bytes
SHA-256: 80f0ad461168552fe63e05df7c585ba7f1eef08906115f8ff38b2a1d9d087f9e

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