Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3f5349aeb885bd0…

MALICIOUS

PDF

73.2 KB Created: 2021-03-06 13:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c3336b91d883a64e744339fbc563335e SHA-1: 3962ea01dbfa0f0be587b6090967b4a46b4c9e93 SHA-256: a3f5349aeb885bd0d8fe711aa23529449655678fc5484e8ce7863da800cef635
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/award?keyword=tutorial+autocad+civil+3d+2014+pdf PDF link annotation
    • http://raxojomaman.iblogger.org/41300328464.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411228/normal_5ff66e08811a2.pdfIn PDF document text
    • https://cdn.sqhk.co/lamimegisu/hf6gcEi/3d_block_games_like_minecraft.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476780/normal_6012d5991f10b.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/dgighid/jadin.pdfIn PDF document text
    • https://cdn.sqhk.co/bonosexov/ja8Rrge/42937752470.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446260/normal_60023614b06ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_603bed1d80320.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_01746e3891944b9d831371a5710a8959.pdf?index=trueIn PDF document text
    • https://9ebe8999-295a-4f11-87dc-c96f3e1b46ff.filesusr.com/ugd/8de238_38b8ba773f9f4114bc6c50b0066e7afc.pdf?index=trueIn PDF document text
    • http://zavivemigowoson.epizy.com/48314562400.pdfIn PDF document text
    • http://vajexakatozezal.epizy.com/how_to_keep_summer_infant_monitor_on.pdfIn PDF document text
    • https://bdee3e82-1fe6-4084-b289-f15f5249f83e.filesusr.com/ugd/749937_172a1ef7c58840e092145a43c30a2fdc.pdf?index=trueIn PDF document text
    • https://94aa8f26-b07a-4c24-bdb4-4112657565c9.filesusr.com/ugd/37428b_b8aec4b13fba47c8adb9d1fa1c256188.pdf?index=trueIn PDF document text
    • http://jenesigafepi.epizy.com/jirimapipigebimerelavozom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44603454-203d-4efd-9200-6d9715b5b852/73082312754.pdfIn PDF document text
    • http://tarobajasupimi.epizy.com/callan_method_slovak_book_free.pdfIn PDF document text
    • http://kutepiguzusudax.epizy.com/alzheimer_s_disease_medications_fact_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cd28b19-454f-43de-bded-5f580ec55544/what_is_it_called_when_you_combine_two_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e19954f-36fd-46f8-8c42-46a73dbc28ea/edenpure_not_heating_well.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08074591-2303-480c-a476-31cf97fbe298/61997667719.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_off0000e086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE086 5556 bytes
SHA-256: f5935e3a0ba60d5e74362237b97dcf2260b51d9242511dd58472d7ae7ae892d3
font_01_sfnt_off0000f38b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38B 10476 bytes
SHA-256: db652e1fff91ac6f0d76b921cbb27a3c3e0cfb8943d55ce0ece6259595d4673a

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