Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3617f29118d495…

MALICIOUS

PDF

72.6 KB Created: 2021-02-27 07:28:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2fe0de5d22767dff598c2717ddc7e6ff SHA-1: 14c6267cceed47d56bbf2e9377e478b15bb7a7dc SHA-256: 4e3617f29118d495d0928707850016f924d542ebb7d0496e34c85488ebda76c7
184 Risk Score

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
  • 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/award?keyword=hindi+film+script+writing+book+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4408879/normal_5ff01a97621d3.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/davSgge/tisevuzekoxilima.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/how_much_does_it_cost_to_become_an_emt_in_texas.pdfIn PDF document text
    • http://nuzadovokebin.iblogger.org/dc_circulator_route_map.pdfIn PDF document text
    • http://takojebuti.iblogger.org/what_is_cognitive_psychology_in_hci.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/jjheODm/nature_hd_wallpapers_for_mobile_240x320.pdfIn PDF document text
    • http://xubixaxar.22web.org/copd_exacerbation_guidelines_bts.pdfIn PDF document text
    • http://mebesovinu.22web.org/no_brainer_full_song_pagalworld.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413842/normal_5ff4b7ea5da8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487419/normal_6018174686d14.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/1_4_de_metro_es_igual_a_cuantos_centimetros.pdfIn PDF document text
    • http://sajiwurejedetu.sportsontheweb.net/78008189157.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/t2zhcmW/negin_mirsalehi_agency.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vujuvisesakok.myartsonline.com/tajan.pdfIn PDF document text
    • http://fokodema.epizy.com/julirapakosiwix.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/46154979589.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/grade_4_english_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/ronajomigadazo.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/65745793551.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_off0000df9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9C 5524 bytes
SHA-256: 40dd4088eac9c2a11a72ef96c6a50d27fb0715e14984f777455ff196cd3ad71e
font_01_sfnt_off0000f262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF262 10284 bytes
SHA-256: 6380d585dc3c10494aa99af0ad116c841f79f3cde7785f1dea0afa3bd424a8cc