Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e3983a478fbc6b…

MALICIOUS

PDF

74.1 KB Created: 2021-06-08 02:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6c9a7333a84f323c96110582549234cd SHA-1: 42f930f59161a15e62e370e3ed81497e5201002f SHA-256: f8e3983a478fbc6ba33c674bc3fcdc123510aa25cf6483bae8b9c722a07a043c
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF that contains a lure for downloading a file, indicated by the 'SE_DOWNLOAD_BUTTON' and 'SE_PASSWORD_ARCHIVE_LURE' heuristics. The embedded URL 'https://smidgel.ru/pbw?utm_term=wwe+2k19+iso+file+download+for+pc' is likely the malicious payload or a redirect to it. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://smidgel.ru/pbw?utm_term=wwe+2k19+iso+file+download+for+pc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4502721/normal_5ff1734fc6722.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465012/normal_5fd33beec58f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480753/normal_600ea1a1451a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473419/normal_60480978dc82e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415740/normal_6021614a4aaf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378152/normal_60601dd416ae8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420245/normal_604195e237d3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369187/normal_605adf7b32f19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387036/normal_6062a36b8c4d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_60bbc62be2007.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501810/normal_602a06bcda0a4.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/d090d6bd-9df9-46dc-ba2d-e395b78e2c8a/15054396328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87165c3b-bbc4-4a37-8b06-e9c4a302b025/what_is_the_role_of_technical_writer.pdfIn PDF document text
    • http://nudifimixonu.pbworks.com/w/file/fetch/144681528/pamp_suisse_gold_bar_in_india.pdfIn PDF document text
    • http://pakesobiroge.pbworks.com/w/file/fetch/144533325/dungeon_hunter_5_free_gems_glitch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fba75f4b-5ddb-4aa2-ba95-482f2d05978e/definition_of_flowchart_in_computer_language.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00baf6e7-aac0-4e4e-8cf7-093c3fcc4149/essentials_of_statistics_for_business_and_economics_7th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/655e8502-5954-4984-b9c3-3946817b7563/historias_biblicas_para_nios_cristianos_evangelicos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/280e549f-4e9a-4f2f-aff4-f25e0d2f0627/how_to_mega_evolve_pokemon_in_glazed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2172a922-55e7-4c26-9b8b-eecbade5b2dd/22436798382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be0c20d2-91a5-4f20-82c3-7af4cfd25c3e/fl_studio_20_windows_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5611f7f5-bd9e-42a5-93fe-219092a997bc/black_and_decker_toaster_oven_manual_t03000.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_off0000e5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D2 5656 bytes
SHA-256: bcfff380245f3a817fb31245879ea6ffccfc460378afb5d2ec9978ea48adaf03
font_01_sfnt_off0000f94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94D 9884 bytes
SHA-256: 1e54fbba0fcea4621aee200a1cc47c022ffbb38b7a4ff82f3654f9e7fae0835a

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