Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b80a179122f1592…

MALICIOUS

PDF

76.0 KB Created: 2021-03-02 04:26:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 6e8033c5fd7ba64f12dc7509c4afef18 SHA-1: 9f22128222ad877b40a8efff3537adc2354113fc SHA-256: 1b80a179122f15929989302631d55bddc4ed25b140ac44dc03ad7c115d462070
166 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting a phishing or malware distribution attempt. The heuristic 'SE_LOLBIN_RUN_COMMAND' indicates suspicious command sequences within the document text, further supporting malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://jacksth.ru/wix?keyword=ritual+de+amor+con+el+arcangel+chamuel PDF link annotation
    • https://cdn.sqhk.co/vixemujomu/kgdNWge/star_wars_flight_simulator_pc_games.pdfIn PDF document text
    • http://miribut.mywebcommunity.org/alesis_q25_driver_download.pdfIn PDF document text
    • https://buwotudotep.weebly.com/uploads/1/3/1/6/131606539/guxidagu-fazuratox.pdfIn PDF document text
    • https://naforuzutexas.weebly.com/uploads/1/3/1/4/131438024/pezesasirixodulela.pdfIn PDF document text
    • http://naturwows.space/razer_blackwidow_ultimate_2013_change_coloriqjw6.pdfIn PDF document text
    • http://okclub.org/score_s_business_plan_template_for_startupsp14hp.pdfIn PDF document text
    • https://wojulifurezusek.weebly.com/uploads/1/3/1/4/131438898/tosakad_fizagu.pdfIn PDF document text
    • http://kpupnov.pro/star_wars_clone_wars_chronological_order_wikismhb2.pdfIn PDF document text
    • http://kushtanash.ru/gusozalesirokabuvilubilaim3u.pdfIn PDF document text
    • https://cdn.sqhk.co/vabedesi/ujgbhcL/black_toddler_boy_hairstyles_for_curly_hair.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/goxapilenujelowunegoxi.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/pujerukekexadetewelelez.pdfIn macro / runtime command snippet
    • https://cdn.sqhk.co/zegapoxasut/jajcghg/rumele.pdfIn macro / runtime command snippet
    • https://cdn.sqhk.co/bopelara/icdgAM0/available_balance_vs_current_balance_fnb.pdfIn PDF document text
    • http://nadahul.ru/good_interview_questions_for_retail_managery432z.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/goxapilIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vesedakowata.onlinewebshop.net/after_twenty_years_by_o_henry_questions_and_answers.pdfIn PDF document text
    • http://pasalalu.rf.gd/tipos_de_autolesiones.pdfIn PDF document text
    • http://zafipuzekamezu.epizy.com/18084054593.pdfIn PDF document text
    • http://wiletuwad.epizy.com/how_to_get_cia_certification.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_off0000ec24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC24 5184 bytes
SHA-256: ae39127ca7eb12222f72d3220fa0f58b9b1f358e94d95abe818e21c82d4dc4d2
font_01_sfnt_off0000fd98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD98 10952 bytes
SHA-256: 97cab14c00542e949fe25453046dded61aa09f75aa6ba558b704a368c3a85caf

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