Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d4eaa022f09e77e…

MALICIOUS

PDF

75.7 KB Created: 2021-02-25 22:00:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 159f0c338e6b7a9bee67eeed418547bf SHA-1: 2931c9d1c7c6df7c49f6084b6374adec10426258 SHA-256: 8d4eaa022f09e77e364fcf6c0dfd27b2dabe8006c6831f89ef7ab5c1ea25d411
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://jacksth.ru/123?utm_term=what+are+wild+dogs+called+in+australia PDF link annotation
    • https://cdn.sqhk.co/sirojenu/ajbQl12/game_of_sultans_viziers.pdfIn PDF document text
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/pesijonigimalaj_kidos_wifukenufi.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/qjwPhep/95206265661.pdfIn PDF document text
    • https://lirejodeju.weebly.com/uploads/1/3/4/6/134628820/memuzuwunagovu_wumagisiboxalu.pdfIn PDF document text
    • http://selozufuwadapuw.66ghz.com/hitachi_starboard_software_9._5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426813/normal_5fe36e752ed7c.pdfIn PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/2167968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473041/normal_60342da7b06d3.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/13852674ae89a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368977/normal_6017a5674616f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bawibas.rf.gd/barium_meal_procedure.pdfIn PDF document text
    • http://febuzoremasovev.epizy.com/foxiru.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/kabigamajukonigabenubisu.pdfIn PDF document text
    • http://gipipirerogarul.rf.gd/chicago_bears_2019_schedule.pdfIn PDF document text
    • http://kabemetuva.rf.gd/21736734436.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_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 5304 bytes
SHA-256: 3b6a39fcce7d3bbc5e61259df63da22f998db3b0d5e6da7b4b0e88047bcc3c2d
font_01_sfnt_off0000faa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA2 11176 bytes
SHA-256: 1522ecdd77f07b0f9cf132324e7c71c19735f19cce62cf2ec19b3c1b9197ddb5