Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c75ccffd1544f18…

MALICIOUS

PDF

90.0 KB Created: 2021-04-29 03:16:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c172c059f10f3adea4c2a0b7b84e7be5 SHA-1: 77edc23aaaa4d7f7f7afe42d0dac1c36125c1495 SHA-256: 2c75ccffd1544f189d22b94de7a276361e070df50bb88d1ad07fa285b0187182
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with at least one pointing to a domain (`dugedepap.ru`) associated with malicious activity. The presence of external URIs and link farm characteristics suggests the document is designed to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=speed+seduction+pdf PDF link annotation
    • https://cdn.sqhk.co/surodamiz/9njbjii/oxygen_concentrator_rental_denver.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/meteregufuwalom.pdfIn PDF document text
    • https://cdn.sqhk.co/xazakamugi/giGhahb/taken_souls_blood_ritual_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496586/normal_5fd1336ebcef6.pdfIn PDF document text
    • http://tebapewulodafe.getenjoyment.net/kipewupeket.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405904/normal_5ff9db6b1718c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394082/normal_6064eec412f3c.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/odhjdhj/fonts_for_instagram_app.pdfIn PDF document text
    • http://zegiwire.sportsontheweb.net/terjemahan_al_quran.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481053/normal_5fe31c80999ee.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/soladu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mugomodag.atwebpages.com/kowijusaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c70eb808-474c-4420-857e-caf71162d699/coleman_lantern_17bh_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/885d1702-f6b9-4568-923f-bff0f2d4f5af/why_are_some_deep_sea_creatures_bioluminescence.pdfIn PDF document text
    • http://fuxuxasezid.atwebpages.com/tefulopiwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e3984e3-7256-4057-9017-4bad79640828/pride_and_prejudice_castle_tour.pdfIn PDF document text
    • http://kadoxosin.atwebpages.com/70970717839.pdfIn PDF document text
    • http://bodegifu.atwebpages.com/tactical_aircraft_maintenance_air_force_bases.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80045f49-7718-4ac9-bd40-3a947e00c683/71346642898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aceb2f77-fe20-45d0-9ed6-972a9f79c68e/dobuvowikuxogevemu.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/work_experience_certificate_format_free_download.pdfIn PDF document text
    • http://femagela.myartsonline.com/acetazolamida_efectos_adversos.pdfIn PDF document text
    • http://kepawomokatuke.myartsonline.com/pogutevupowope.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_off000123a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123A5 4912 bytes
SHA-256: 0560d35f1ff82ce5782dd53e3f00c4b4983b8f7a1a3066666fd5ee40c7a27ca4
font_01_sfnt_off0001347b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1347B 11076 bytes
SHA-256: 5c37ed21d6c3c068a03bb320842727f2e884dde93e4287d4198d4f32ee4f7d65

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