Malicious PDF — malware analysis report

Static analysis result for SHA-256 6589d2d0bf3adbb8…

MALICIOUS

PDF

73.0 KB Created: 2021-03-17 04:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 717cdbd56efe920de22216d865220c00 SHA-1: 3f2a53da8ea37555e2897be32b03cd15bbf8a31c SHA-256: 6589d2d0bf3adbb80679a30fe9ca0eb4613fcaf11ab8c5bb9071c1a60e55f533
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=reproductor+mx+pro+apk+1.15.9 PDF link annotation
    • http://togimiguluvux.iblogger.org/what_is_clerical_work_measurement.pdfIn PDF document text
    • https://mopopapepiror.weebly.com/uploads/1/3/2/7/132741339/b2b9981084.pdfIn PDF document text
    • https://cdn.sqhk.co/vimexuda/zjfja5U/zusumobalatuxesefalutib.pdfIn PDF document text
    • https://cdn.sqhk.co/gepumenujeme/gchjXic/xujinogewesitibupesuja.pdfIn PDF document text
    • https://jaluwaxigesife.weebly.com/uploads/1/3/4/6/134640648/2a7b10f4a0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/276fa89b-76eb-4a16-9272-a24f86ad1034/sony_ps_vita_16gb_memory_card.pdfIn PDF document text
    • http://podijasopasul.epizy.com/5th_grade_decimal_division_word_problems_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cae60ef4-da85-47d1-98f4-15be71912432/63202947385.pdfIn PDF document text
    • http://daguvenirekeb.epizy.com/apresentao_em_power_point.pdfIn PDF document text
    • http://nigukeja.epizy.com/39717885024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68ceb901-fead-4280-8728-e337b28b1f25/52994933597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea79aea-e5ca-4ae7-88c0-2a4a4ea4c2a1/danby_dehumidifier_costco_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/62866458243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d465ba-0ffe-4dfe-ad88-8acdd65434a8/what_does_baldwin_mean_by_the_fire_next_time.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dca935f0-e6c8-46ac-9425-c6ce52f2b411/musica_cristiana_acordes_de_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f240604-1233-434e-a147-467f36809748/hp_laptop_6470b_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd85418-d297-486f-ba2c-a65cd73e417b/zexuzasodaraku.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/l_d_a_ka_full_form.pdfIn PDF document text
    • http://zesukojuwuveg.rf.gd/excel_vba_worksheet_listobjects.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/xakutitirisezuma.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_off0000dbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAF 5512 bytes
SHA-256: 87b20cd132cdeb8a1a3514718bc02042217448a80bc1b4de91af6e9c5979360e
font_01_sfnt_off0000ee78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE78 11304 bytes
SHA-256: f12af276f1c7093183b01c4ecb0e5a9b2d5e81101dea6460de6bcf45c3eb5a36

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