Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5c48c0aa8e2b59…

MALICIOUS

PDF

75.1 KB Created: 2021-02-28 02:57:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 16d49374b4fb38bc6b66305472e6fad3 SHA-1: 8f7f17274ebf711d4fa89c3ba0994c6381b4e5c0 SHA-256: 8a5c48c0aa8e2b5983d7939ac4963c39b062446db84fa220bf8573e6236f5ca0
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://resalured.ru/123?utm_term=ccna+course+study+material+pdf PDF link annotation
    • http://bukenisefino.mygamesonline.org/ancient_greece_worksheets_3rd_grade.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/ihOtjdB/fuwanovofodifavitif.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/how_to_interpret_arterial_blood_gas_results.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/fhd2vsH/1201387611.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/how_do_you_use_essick_air_humidifier_bacteriostatic_treatment.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/how_to_fix_the_sound_on_my_element_tv.pdfIn PDF document text
    • http://jasovawuke.22web.org/kaththi_movie_tamil_songs_free.pdfIn PDF document text
    • http://vuwefedope.sportsontheweb.net/nulinafezezexuvopu.pdfIn PDF document text
    • http://dakisemakegag.sportsontheweb.net/what_is_dataset_object_mcq.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/hjpoTBJ/ranob.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/building_maintenance_plan_template.pdfIn PDF document text
    • http://sutovuresas.mygamesonline.org/pozal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xozeb/cirrus_sr22_maintenance_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/marshall_mg30cfx_amp_settings.pdfIn PDF document text
    • http://filivuso.rf.gd/javascript_format_number_2_digits_comma.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/wuguxub.pdfIn PDF document text
    • http://pamixawikisif.epizy.com/15353244543.pdfIn PDF document text
    • http://boparozib.rf.gd/folding_carton_box_templates.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_off0000e946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE946 5308 bytes
SHA-256: ab6a15a6d7275201ae68869bcb33c6f33c9afbd6f9402f9ca2c5b8d296891538
font_01_sfnt_off0000fb44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB44 10600 bytes
SHA-256: e46a719281252cbf35cadd8c186427c3cca06672b01b5f2c5fc312c070982039