Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d54efb7a34e1032…

MALICIOUS

PDF

72.0 KB Created: 2021-02-27 08:59:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ea2f12bee92407ce6b11636e7a642981 SHA-1: 931eb413f3a920afef50a49cccdcb7aae5cadd6f SHA-256: 3d54efb7a34e103253c1dfe34bf72b07731ab6a045fda416d2cadaa0835d40b0
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://kuzutuzo.ru/award?keyword=huskee+lt4200+belt+adjustment PDF link annotation
    • http://prolac.ru/md._emu_cheat_codesk7ywo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370269/normal_5fe541bf7fbac.pdfIn PDF document text
    • http://duplicwcnj.space/992919245340q1ug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472501/normal_600fce41eb889.pdfIn PDF document text
    • http://teaitalis.space/desh_bhakti_gana_dj_songo54zp.pdfIn PDF document text
    • http://sedouche.xyz/23319180011wwhez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470019/normal_601e50d266e1f.pdfIn PDF document text
    • http://nerroba.info/822202230368ngwn.pdfIn PDF document text
    • https://cdn.sqhk.co/savujegu/7jVhhhc/sharks_spotted_in_california_2019.pdfIn PDF document text
    • http://nosinoski.shop/5471576911dkl87.pdfIn PDF document text
    • http://leledup.mypressonline.com/zufetaruvibezogajujitile.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/Ajboggj/phoenix_weather_december_january.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382627/normal_60340d9d66645.pdfIn PDF document text
    • https://cdn.sqhk.co/rogekanus/8Yibhfa/peniwokezoxejuzenibelijud.pdfIn PDF document text
    • http://hookup755.fun/fategofusgs9e8.pdfIn PDF document text
    • http://silvanozito.online/city_mini_gt2r0lk5.pdfIn PDF document text
    • http://trelon.fun/18931093476mlah8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402244/normal_6033dd300589d.pdfIn PDF document text
    • http://center-san.ru/orgullo_y_prejuicio_libro_onlinedh1y6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://www.youtube.com/watch?v=nZ--npLpIn 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_off0000dd48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD48 5476 bytes
SHA-256: b52fd9cca016d121e9a0fc0642e76257477550730f855bb2a2b030bb8bb60578
font_01_sfnt_off0000efdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDF 10332 bytes
SHA-256: 526ee315b13e421ac5c5c22fd789140ad5d778cb7d490806de6a3781de7e3cfb