Malicious PDF — malware analysis report

Static analysis result for SHA-256 55ffa8f381b1f20a…

MALICIOUS

PDF

71.6 KB Created: 2021-02-16 09:22:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 28caa8de3ba6083f4c7bf6b971d4aeae SHA-1: b8f0ed18ab9fe77c32a29ecf71eee1e869d2a64e SHA-256: 55ffa8f381b1f20acb4ea64ca65cf100699427ae9006e1cde083857056c6f60f
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://druttle.ru/wix?keyword=8+ball+pool+hack+coins+and+cash+online+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421474/normal_6004a9710e15a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416653/normal_5fdc498e6ef39.pdfIn PDF document text
    • http://dabejorugorazom.22web.org/birthday_song_in_tamil_video_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379500/normal_602b3e6f96ebb.pdfIn PDF document text
    • http://driveformclanemilwaukee.com/95138906977zi2b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388174/normal_5fe6f9575830e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476135/normal_602af4147b4bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461777/normal_6023db5c9dd67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481852/normal_5fda96e99dde1.pdfIn PDF document text
    • http://chategratis.online/apush_review_book_2020023dk.pdfIn PDF document text
    • http://timecodes.net/badger_meter_pc100_manualrennj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483103/normal_602261cbf4111.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464870/normal_5feb258af2d9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493541/normal_5fcc99fb4e3bc.pdfIn PDF document text
    • http://znatural.space/vujisuvaga67rm8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454966/normal_600f744044d6b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://robowogutalopet.epizy.com/sql_server_2000_for_windows_10.pdfIn PDF document text
    • http://tijiwef.epizy.com/mozilla_firefox_quantum_57._0._1_free.pdfIn PDF document text
    • http://nudegew.rf.gd/fajubegupivi.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_off0000da0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0E 5640 bytes
SHA-256: b0809eeba72f1c480db34328391802047a6231f93e61447958ac01af40497fa3
font_01_sfnt_off0000ed2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2E 10360 bytes
SHA-256: ba73edf80e0efe14f0b1804f49dce3862f3eddd7b19258cf25605fd9fce22477