Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc04a7cec65a2444…

MALICIOUS

PDF

69.2 KB Created: 2021-01-26 04:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5fc44c41fe272896ad8095b1bcb7cc32 SHA-1: 0f565e20616f61a756a5a52a9ec13884c7b9c972 SHA-256: bc04a7cec65a244499928398866a8ee31864ffe7c08290b5c04fa71910c54c9d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/wb?keyword=car%20driving%20simulator%20sf%20mod%20apk PDF link annotation
    • https://cdn.sqhk.co/kikolibub/jbCrjhB/ios_14_live_wallpaper_iphone_se.pdfIn PDF document text
    • http://simultaneously.space/megotuwedewifewinewgoivp.pdfIn PDF document text
    • http://maslovauto.ru/ruwufipufunapmpau.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481820/normal_5ffac7af6b758.pdfIn PDF document text
    • http://sellforce.ru/sibezedkvr4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445558/normal_600d68fa82e34.pdfIn PDF document text
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/3518042b48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495409/normal_5ff9ac58edfdb.pdfIn PDF document text
    • http://discovljzg.fun/photo_to_video_maker_apk_for_pcriq7a.pdfIn PDF document text
    • https://xefezabegeritaj.weebly.com/uploads/1/3/1/3/131379478/vekabetilibo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418567/normal_6009f2ca12415.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/djcgitg/iowa_high_school_all_star_soccer_game.pdfIn PDF document text
    • https://dakufosaxem.weebly.com/uploads/1/3/4/7/134771611/volupixuvo.pdfIn PDF document text
    • https://vamububok.weebly.com/uploads/1/3/5/3/135317225/f89281471a.pdfIn PDF document text
    • https://dobivevoxopu.weebly.com/uploads/1/3/1/4/131453544/6974969.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/tupofelasujewas/7691369031.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/come_unto_christ_sally_deford_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/anecdotal_records_in_nursing.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_off0000cea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA6 5392 bytes
SHA-256: 3baefdea276878660397297808bb9b2c1fc9a13895375e07961374ff4911d48c
font_01_sfnt_off0000e0ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EF 11940 bytes
SHA-256: e0ebffc8ad39ec5e23dde7902c2aa78dfaa883567bc47ea124d78a07ad9d3277