Malicious PDF — malware analysis report

Static analysis result for SHA-256 d41dfc6dd05f235d…

MALICIOUS

PDF

68.5 KB Created: 2021-01-29 20:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0c474c11b0899484feda9026e2137d86 SHA-1: f9486d3346b9c95f0a444f8559385eb7ad0a715b SHA-256: d41dfc6dd05f235d820962d3136fb2d515ca5db48b9301c8b8875fc3f2c5becc
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://jottigo.ru/wb?keyword=race%20car%20driver%20dies%20after%20plane%20crash PDF link annotation
    • http://lofitner.buzz/my_airtel_offers_4gvqbrc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367279/normal_5fc9513785409.pdfIn PDF document text
    • https://cdn.sqhk.co/zujumatatub/hc3MifS/fidines.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461744/normal_5ff7c1dd81c92.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/jeGjijf/the_light_between_oceans_ending_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408471/normal_600bf2555d4d2.pdfIn PDF document text
    • http://takipleskazan.org/32979261197uctru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413563/normal_5ffb5b7258376.pdfIn PDF document text
    • http://ig-about.net/kikikojozusdc9ue.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464707/normal_600a8982ae5c5.pdfIn PDF document text
    • http://esagafow.fun/aurangzeb_alamgir_history_in_urduoonmc.pdfIn PDF document text
    • http://stepka2016.xyz/mofogopotifituzao8ey1.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/xeponodij/9284881794.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/kivixilotoxikibapidakeniw.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/answer_for_hope_you_are_doing_well.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 5312 bytes
SHA-256: 239b2a0f59e584e374aac4bceaaef5fcf896fab06910cd2b5fb96dde817e9ef0
font_01_sfnt_off0000e0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BD 10680 bytes
SHA-256: 0e1b463090ff21e285dfa38e4bea5c3ca1f6e1e16ddd246e78364697e54e91de