Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f76a0e835919c4e…

MALICIOUS

PDF

67.5 KB Created: 2021-02-19 05:18:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: da20aaa7d9b3af83ee0d16bb4c5fd04d SHA-1: 9f5484848812630ca0630429d69bcef4a4702b75 SHA-256: 3f76a0e835919c4ea970e9eec2214bae185f16ea93e803bd4ab20c8df2db0715
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://jottigo.ru/123?utm_term=big+fish+casino+facebook+online PDF link annotation
    • http://itasda.online/386420671505quik.pdfIn PDF document text
    • http://miiliioner.xyz/99792129213qh548.pdfIn PDF document text
    • http://baltika-trans.com/39538596591z5vmt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453888/normal_5fc5f45b7f086.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501201/normal_5fc672c2516f4.pdfIn PDF document text
    • http://jobauthor.online/color_splash_text_effect_photoshop6bebp.pdfIn PDF document text
    • http://gratoramaa.website/cosine_rule_example_and_answerr4hlc.pdfIn PDF document text
    • http://www19216801.site/chupke_chupke_1975_movie_songs_freev5den.pdfIn PDF document text
    • https://kavekoda.weebly.com/uploads/1/3/5/3/135326791/1090075.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403556/normal_6014cdbd21642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445570/normal_5fd9e1582af7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405184/normal_5ffd3a9dd3a90.pdfIn PDF document text
    • https://nuxowodevuj.weebly.com/uploads/1/3/4/6/134609076/dijof.pdfIn PDF document text
    • https://kitenogoxaginup.weebly.com/uploads/1/3/5/2/135298643/zoxij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385847/normal_6028017bc567a.pdfIn PDF document text
    • http://asia.kiwi/80654029599qjvzz.pdfIn PDF document text
    • http://devicesprotectionforusers.site/libros_de_seduccion_descargar_grr6bup.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/e9hliie/23639179819.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC13 5300 bytes
SHA-256: bfe3114b06e53dee746cc6a76fdf8a589f6bc872ca224350ba9d05220331c536
font_01_sfnt_off0000de30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE30 10184 bytes
SHA-256: b63a04d67dd2b3c85ac2b98553fff56c7b76329e74597e119edf06f8297cbee1