Malicious PDF — malware analysis report

Static analysis result for SHA-256 376b0647cfba395c…

MALICIOUS

PDF

80.3 KB Created: 2021-02-12 04:31:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 79ba5a9c7d9cc65d12a4feb1296c8923 SHA-1: 4857936804390ae0be6815c8387060d8f2d22bf8 SHA-256: 376b0647cfba395c4a19f8bc54ff96d8adf2ed7844e78d2bc86159382f0324d9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=cosplay+foam+patterns In PDF document text
    • https://cdn.sqhk.co/nezazexador/ijBjoia/papo_town_amusement_park_walkthrough.pdfIn PDF document text
    • http://xurufotuzu.iblogger.org/dodetovarabasisokedaza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426957/normal_5fc8d5364fdd7.pdfIn PDF document text
    • http://lajulufubugo.22web.org/bayliner_ciera_2450_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379034/normal_60077bb10f71c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450746/normal_5ff493a90cdba.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/UzprIIs/87519933693.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453743/normal_5ff158f9c154d.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/idzjgb7/server_jobs_near_me_hiring_full_time.pdfIn PDF document text
    • http://rukofuvifoti.22web.org/emotional_saiyaan_song_pagalworld.pdfIn PDF document text
    • https://cdn.sqhk.co/xafeperale/eGiaijz/city_car_driving_download_free_2018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pesogulovuxolub.rf.gd/72059793706.pdfIn PDF document text
    • http://nowivopikuzud.epizy.com/57044506176.pdfIn PDF document text
    • http://zisigogemewuju.epizy.com/bighorn_19ecb_safe_manual.pdfIn PDF document text
    • http://fogivezin.rf.gd/xaleviluturerolobuguto.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_off0000f108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF108 5052 bytes
SHA-256: 599b1d14f0536fdb0099bbb20edab56a32ba8fe0a5fb750371ea5643e48c34be
font_01_sfnt_off00010227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10227 15568 bytes
SHA-256: a157dab6888460a64b779bb013829b6568766a46e3fe78893ac284e970316f82