Malicious PDF — malware analysis report

Static analysis result for SHA-256 0712c67497d2c5df…

MALICIOUS

PDF

73.0 KB Created: 2021-03-06 16:36:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0ad79bf5fdecb990f10378b2eb1ed054 SHA-1: 30f9d34d31fc372d4f8b384d57d378d71c7a2895 SHA-256: 0712c67497d2c5df1b717e7316168be5b6c5c29cb694b559b2a62444554bbb0b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/aws?utm_term=hindi+grammar+sarvanam+worksheets+for+class+6 PDF link annotation
    • http://kinoogf.space/95238254462toscl.pdfIn PDF document text
    • http://lazadacostumercenter.com/57369698481pasbv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486220/normal_602b2aeb788cb.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/38RFijJ/best_online_code_editor_free.pdfIn PDF document text
    • http://rowexusaje.mypressonline.com/how_does_a_navien_combi_boiler_work.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455377/normal_5fe230f9a90c4.pdfIn PDF document text
    • http://micrometer25bill.site/little_house_on_the_prairie_season_3_episode_18_casthmm84.pdfIn PDF document text
    • http://lelekelosutov.getenjoyment.net/geometry_practice_7-4_similarity_in_right_triangles_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/wafepazi/Shd6gfk/zololabajuvosadirelozun.pdfIn PDF document text
    • http://ryukzak.digital/is-_120._c_test_answers6ta1p.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/4c9e2321-27e3-4a40-a212-db6feb7b5432/37946801598.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/65491397931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37522653-1781-420d-8480-3db4464adcd6/nintendo_ds_lite_charger_type.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eebc83c6-a44c-4b3c-87ab-2b92bf131b28/alcatel_onetouch_retro_2017b.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/68847998703.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a94b314f-73aa-4576-ac2e-64977043a66f/integral_calculus_meaning_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/79253109136.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/apple_uk_book_appointment_repair.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_off0000df8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8A 5768 bytes
SHA-256: 27febfe4b120ba513d0a02dbffed6b5d7fad6e01af29059a0869e45a455275b7
font_01_sfnt_off0000f317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF317 10392 bytes
SHA-256: ff88f9c0a4d66779857f5c5a1c6ee78e732374728af797881438f874d9a52828