Malicious PDF — malware analysis report

Static analysis result for SHA-256 39aff5ef89c290a6…

MALICIOUS

PDF

74.5 KB Created: 2021-02-28 03:56:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0dc1c32e16e03830535cbd5d3733f05c SHA-1: 6df59230897a220eb8cca0c489ba9ac9d1614282 SHA-256: 39aff5ef89c290a62857833f2d0363138bf9ac949a584802e2f40a4b2581fe95
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://ponafet.ru/wb?keyword=dungeons%20and%20dragons%20online%20noob%20guide PDF link annotation
    • http://beststudent.fun/vampire_diaries_season_8_finale_soundtrack88cdm.pdfIn PDF document text
    • https://tupivoxutod.weebly.com/uploads/1/3/4/4/134467409/gawigosefu.pdfIn PDF document text
    • https://zosixilerav.weebly.com/uploads/1/3/1/8/131856356/3320641.pdfIn PDF document text
    • https://javumegibevi.weebly.com/uploads/1/3/4/6/134634398/6771169.pdfIn PDF document text
    • https://cdn.sqhk.co/vovomafejuwa/f9cibij/52438747776.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379732/normal_5ffba7df72bf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465397/normal_6010d2fce8c5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379720/normal_5fd94290808ca.pdfIn PDF document text
    • https://cdn.sqhk.co/sugezigo/Nhbhbjd/masha_and_the_bear_costume_baby.pdfIn PDF document text
    • http://callup.today/just_mercy_book_club_questions0vqa8.pdfIn PDF document text
    • https://zixojubagever.weebly.com/uploads/1/3/4/6/134613499/sewepasopupejazivib.pdfIn PDF document text
    • http://biolinkus.me/83742253396krutg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474448/normal_5fd627d4c0937.pdfIn PDF document text
    • http://apparently-home.com/the_happy_body_exercise_program_poster3iiu0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452834/normal_5fe1509b7598d.pdfIn PDF document text
    • https://nakagikirowi.weebly.com/uploads/1/3/2/6/132695306/6532225.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/zonebon/12012352648.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/64221884960.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_off0000e7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F1 5132 bytes
SHA-256: 0f9b9c75f2b927f201a41d287be1b1d951ebf8a32c5fd94414ec2d436588a116
font_01_sfnt_off0000f975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF975 10344 bytes
SHA-256: 25320acc7e817ef17eb5ca63e67a56f4988c2ad2088e643caef8ab8c41f72ea5