Malicious PDF — malware analysis report

Static analysis result for SHA-256 575d54ebe56b2ea7…

MALICIOUS

PDF

76.8 KB Created: 2021-02-06 19:15:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ccf8c6b4b90729a56528fb217e15b0f7 SHA-1: 5a5b1084e7aea56480fe2b30fb0073cca1fe73d0 SHA-256: 575d54ebe56b2ea76a51bc7a7409a63c228d44131ccfdd42c757ee4f0cfde3fc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://jacksth.ru/aws?utm_term=edhs+2005+final+report PDF link annotation
    • https://cdn.sqhk.co/pojuzijix/jhhghip/nejejuwamujivi.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/azUhhaU/hockey_goalie_throat_cut_by_skate.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/ihizqdO/77351927692.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/Rjbicgf/nevowisozolowosega.pdfIn PDF document text
    • https://bebopajuze.weebly.com/uploads/1/3/5/3/135312866/6808258.pdfIn PDF document text
    • http://sushibara.net/harbor_breeze_remotee3hta.pdfIn PDF document text
    • https://nuxirudeduw.weebly.com/uploads/1/3/4/4/134442083/00566f.pdfIn PDF document text
    • https://cdn.sqhk.co/jagapifa/Khfihgj/dash_scatter_color_scale.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/aYjjyia/download_we_heart_it_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/posukomokufi/0yOvfib/kanto_yu4_powered_speakers_with_bluetooth.pdfIn PDF document text
    • http://superheatbelt.xyz/369842288833gluz.pdfIn PDF document text
    • http://okclub.org/bella_s_lullaby_piano_sheet_music_original3487d.pdfIn PDF document text
    • http://hdvideo.design/49466103434kk391.pdfIn PDF document text
    • http://prizinsta.info/vivah_film_all_song_mr_jattqtlae.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/norozovijalu/catering_business_proposal_format.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/korean_visa_application_form_file.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/american_express_priority_pass_enrollment_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/wedding_budget_spreadsheet_google.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_off0000efdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDD 5484 bytes
SHA-256: 3599bfe52975590e35c329e903bcb7b3ad7e55079fc18d429ed04088283f6aac
font_01_sfnt_off00010285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10285 10556 bytes
SHA-256: dc2b0c6af26ce2d39624c734d42759ab974075233a5acdd74f8f0876743d6401

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