Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b5744b7d5716d15…

MALICIOUS

PDF

75.0 KB Created: 2021-03-12 13:54:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1cb011e16d849bdf9e287e07e51797aa SHA-1: bd11e3d4e2f6e1719634c58c0e5b99d193097746 SHA-256: 1b5744b7d5716d1568fd01feda5853960673f90a17c66b7931f55e0ab0edb52b
126 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm on disposable hosting. The embedded URLs, particularly 'https://maypoin.ru/123?utm_term=ensogo+limited+annual+report', suggest a phishing or malware distribution attempt disguised as an annual report. Although no scripts were explicitly extracted, the PDF structure and numerous external links point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://maypoin.ru/123?utm_term=ensogo+limited+annual+report PDF link annotation
    • https://s3.amazonaws.com/panokojol/72583189574.pdfIn PDF document text
    • http://copyrightsupporteds.com/915328916687xaqz.pdfIn PDF document text
    • http://boketizabujig.scienceontheweb.net/3667437212.pdfIn PDF document text
    • http://mibejar.sportsontheweb.net/bear_archery_cruzer_x_rth_compound_bow_package.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/explain_sigmund_freuds_theory_of_personality_development.pdfIn PDF document text
    • http://zoomita.space/226777099845si7v.pdfIn PDF document text
    • http://portkamesto.site/timex_expedition_field_chronograph_indiglo93t91.pdfIn PDF document text
    • http://testersairf.xyz/gtn_750_install_costkstmk.pdfIn PDF document text
    • http://wordsidepost.top/kenmore_front_load_washer_error_code_leurdzq.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/valiant_mobile_password_resettbmf0.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/jubagepab.pdfIn PDF document text
    • http://tehnomaster.net/automatic_mouse_and_keyboard_full_freeta372.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/aashiqui_movie_video_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/41702832361.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ligiwekuxote.myartsonline.com/beholding_bee.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75fb358a-8718-450c-8611-a58e1601be83/foruxumifazuvubiwumolesem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d66fb5f-6330-4c9f-ac5d-a7e012f0b6dd/35524785171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b94ff706-f6a4-4766-9b33-1a3a51dca827/72098477819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44788fa9-6132-4edd-80de-4ee41976f49f/fusutin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41af9c1d-09f1-4980-867f-835a7d3abac1/xuketadegosami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad40bebf-f597-4e7f-b308-51359531be7b/digupeterezosojovakazig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30ee9e12-3a32-43e8-9fee-76b342ae9094/richard_dotts_audio_books.pdfIn PDF document text
    • http://roporuti.onlinewebshop.net/nijonetosameperijexa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1b8eb1c-b4e4-4cc9-bc55-98d570de503b/best_offline_video_editor_for_android.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_off0000e44f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44F 5236 bytes
SHA-256: 20941e92a7dc4ac2f918e26908886589af7d6f27122ef0c3856669a012195d29
font_01_sfnt_off0000f606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF606 12004 bytes
SHA-256: 18bc938f7cf7c9b16e77260555c4c944bf21ee8fbaf4a24e55e9218a6d248148