Malicious PDF — malware analysis report

Static analysis result for SHA-256 41eb28911e3fe9a4…

MALICIOUS

PDF

74.2 KB Created: 2021-02-19 13:49:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 46e80ffcf38fc8d497d1344a93dc1cbe SHA-1: 7cefee7a27b114b56f107f11616c7ea20a9d60bc SHA-256: 41eb28911e3fe9a4841f434f71c5d18e529de28f5dd2ea8544daa518da020b78
126 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
  • 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://baarspo.ru/wix?keyword=portsmouth+uni+swim+team PDF link annotation
    • https://cdn.sqhk.co/zudusidesu/hcghfDG/realtime_subscriber_count_twitch.pdfIn PDF document text
    • http://rekalotalixug.iblogger.org/whatsapp_status_video_hd_mp4.pdfIn PDF document text
    • https://cdn.sqhk.co/jafipago/bybkgiY/lopogoduteko.pdfIn PDF document text
    • http://salonapp.xyz/toshiba_regza_no_signalun6ad.pdfIn PDF document text
    • http://instacopyrightcenter.com/cdr_file_to85ovl.pdfIn PDF document text
    • https://cdn.sqhk.co/dudokirabog/hcjbjfN/51154935002.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/jageIjf/sound_effects_app_windows_10.pdfIn PDF document text
    • http://siondez.ru/3537955477obpsh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447467/normal_5ff1400a54c5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449974/normal_5ff201d067708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421473/normal_60271f2bb8c5f.pdfIn PDF document text
    • https://cdn.sqhk.co/sulubejes/0kfwZhx/dialysis_near_me.pdfIn PDF document text
    • http://vijufik.iblogger.org/assamese_full_movies_mission_china.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mufogedone.epizy.com/bepofajifolodumu.pdfIn PDF document text
    • http://bagineju.epizy.com/farojexomerelup.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_off0000e884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE884 4988 bytes
SHA-256: ca66f4f3477675782d4aba2ef8d91c9107bcb84047e8dd282b289965b7d1844e
font_01_sfnt_off0000f95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95B 10184 bytes
SHA-256: 915f197e02cb35f217809c2b8c5d8482996c29f066e9d9c2c82fc2b708893c06