Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d76241d95754bb…

MALICIOUS

PDF

76.1 KB Created: 2021-03-04 00:05:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ce8bef0e4fa50c98034969390356b096 SHA-1: 64a3c69d9d07584469e8b098f2c437f09482165e SHA-256: a4d76241d95754bb012b71fb0b925be7cbe948ae612c7f5294f97bf26df38fc5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jumiwimov.ru/aws?utm_term=el+peque%25C3%25B1o+vampiro+pel%25C3%25ADcula+2017 PDF link annotation
    • http://namafafiteg.mypressonline.com/activities_for_toddlers_shapes_and_colors.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393916/normal_602507e4cb8c0.pdfIn PDF document text
    • http://wejesigozolireb.getenjoyment.net/gojevofed.pdfIn PDF document text
    • http://gufurebu.medianewsonline.com/fogavibiwikudazofoguvok.pdfIn PDF document text
    • http://zusiwibewire.mypressonline.com/troy_bilt_trimmer_attachments_home_depot.pdfIn PDF document text
    • http://kirudikegopoded.sportsontheweb.net/fun_home_comic_download.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/tubigugimokujawutuxuli.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369768/normal_60085cca20c5d.pdfIn PDF document text
    • http://topukovatawosu.sportsontheweb.net/gexogojararu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490133/normal_6010602386f0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481170/normal_602a17b335f8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391331/normal_6029a1dc5c641.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460694/normal_6003b454aec82.pdfIn PDF document text
    • http://kekukuxowan.22web.org/56653462753.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jupanadipi.rf.gd/after_series_anna_todd_free.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/64249691846.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/zuzuf.pdfIn PDF document text
    • http://dejanubotikepiw.rf.gd/jilaropubepajiwovinevun.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_off0000e60d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60D 5716 bytes
SHA-256: 0ce97f03cddd4e79aaa7407baf416fabc01da55258f5f2f5aa5b06516b9810c4
font_01_sfnt_off0000f93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93E 12252 bytes
SHA-256: 09d8480667e88a9b80a46cc9541d1693761bf5e10f930aeb4935065b3c1b05de