Malicious PDF — malware analysis report

Static analysis result for SHA-256 c190e2afa3434964…

MALICIOUS

PDF

85.3 KB Created: 2021-06-05 18:05:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 17668f33ebfd48c446de8c9d2a0e35d3 SHA-1: 4290791992a2e9ea99605d8b89de54e5a03d25a4 SHA-256: c190e2afa3434964f7e4a725a1d0c8f579c658a658c1ade44158d9f4425b4bac
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains an embedded URI pointing to 'coretry.ru', which is likely a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious external resource, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://coretry.ru/pbw?utm_term=star+wars+clone+blaster+sound+effects PDF link annotation
    • https://xavebebojemap.weebly.com/uploads/1/3/4/8/134848852/ebab91a941e.pdfIn PDF document text
    • https://xefofuzidadadaz.weebly.com/uploads/1/3/4/8/134876265/xokutadudikipu.pdfIn PDF document text
    • https://tamilazubi.weebly.com/uploads/1/3/4/6/134604156/3785e21fb.pdfIn PDF document text
    • https://bisifivu.weebly.com/uploads/1/3/4/7/134724717/6718374.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bijinim.pbworks.com/f/adjective_clause_examples_with_answers.pdfIn PDF document text
    • http://venatulafiz.pbworks.com/w/file/fetch/144425661/how_many_calories_in_dunkin_donuts_apple_fritter.pdfIn PDF document text
    • http://pebegijopolo.pbworks.com/w/file/fetch/144536400/how_to_change_blade_on_milwaukee_skill_saw.pdfIn PDF document text
    • http://mogulobobis.pbworks.com/w/file/fetch/144496071/dimensional_analysis_problems_worksheet_answers_chemistry.pdfIn PDF document text
    • http://mefijunov.pbworks.com/f/dafadesoxugivujazuwi.pdfIn PDF document text
    • http://jeselivid.pbworks.com/f/balasaheb_shinde_english_grammar_book_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d60013c4-bd24-4091-80e8-2d511ed52de8/zufakuwovazipatara.pdfIn PDF document text
    • http://doxawadar.pbworks.com/f/english_grammar_exercise_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c49e18de-49be-45bc-9ff6-498f5b38bc9d/christopher_columbus_journal_of_the_first_voyage_to_america.pdfIn PDF document text
    • http://gosirata.pbworks.com/w/file/fetch/144668943/37911322896.pdfIn PDF document text
    • http://jitijaloj.pbworks.com/w/file/fetch/144566019/38094470320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeab2a6b-86e5-4895-843f-e769066a1b8d/unwholly_neal_shusterman_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4366951b-f55e-4cf1-a2a5-de8774209d4e/what_does_balisong_mean.pdfIn PDF document text
    • http://jobojifitin.pbworks.com/f/nidexiluriperon.pdfIn PDF document text
    • http://dadilotofexi.pbworks.com/w/file/fetch/144574518/12325191854.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32360caa-d3b6-4bd1-a42b-b9f17a45a753/what_is_the_purpose_of_employment_equity_act_in_south_africa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2215c484-db0c-4478-a822-1aa4324c868e/37910745548.pdfIn PDF document text
    • http://pefagisunel.pbworks.com/w/file/fetch/144487059/60772652327.pdfIn PDF document text
    • http://foziwedugumu.pbworks.com/w/file/fetch/144465321/72501106021.pdfIn PDF document text
    • http://pekazaxe.pbworks.com/w/file/fetch/144654405/how_to_get_free_robux_no_surveys.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_off00010f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F28 5348 bytes
SHA-256: 44c06ac6b640f2a2a03a739d9407a7d2bf29c6f2f78e6635e8143e4db8d5ef89
font_01_sfnt_off00012174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12174 11172 bytes
SHA-256: d739492e6c39f342616ff9b385389548f8b63cd21dfbbfcd093bfc943d5e3b0e

Open this report in the interactive analyzer, or submit your own file for analysis.