Malicious PDF — malware analysis report

Static analysis result for SHA-256 66a597b8d0d5c4ba…

MALICIOUS

PDF

72.9 KB Created: 2021-01-24 05:16:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cf96dc606adef5b3e873bd82cf1a083c SHA-1: 53a16be6be60b127e87f1cc8baa43a4df0906a4b SHA-256: 66a597b8d0d5c4ba24056dda55d22000ac8b1e5263c33b5a19a1f15251015737
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=mx%20player%20pro%20download%20firestick PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445320/normal_5fe81ae14290a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369779/normal_5fe4b736ab6da.pdfIn PDF document text
    • http://fiwuwoxas.22web.org/37856585829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445736/normal_600b739881c40.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/haRictV/urban_car_simulator.pdfIn PDF document text
    • http://gimakelodikovij.iblogger.org/erie_county_health_department_inspection_reports.pdfIn PDF document text
    • https://cdn.sqhk.co/kilatelazobe/ihbmiib/jellyfish_printable_color_pages.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://babupit.epizy.com/shogun_2_trainer.pdfIn PDF document text
    • http://wefuzage.epizy.com/76775954902.pdfIn PDF document text
    • http://vevemaj.rf.gd/el_bautismo_anselm_grun.pdfIn PDF document text
    • http://bibikefogive.epizy.com/algebraic_geometry_book.pdfIn PDF document text
    • http://lafasusatar.rf.gd/free_printable_thanksgiving_worksheets_for_4th_grade.pdfIn PDF document text
    • http://fuvezijejek.epizy.com/xipevuvodemefifejusarepi.pdfIn PDF document text
    • http://gusufarafedi.epizy.com/59748546571.pdfIn PDF document text
    • http://sobezoneroli.epizy.com/todotokokatikamilemavo.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_off0000df62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF62 5480 bytes
SHA-256: 5e0bd4b1f757a61fc719b2f5b72cf015d63c40148f178d3b9f4ad78ebb1a3951
font_01_sfnt_off0000f248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF248 10832 bytes
SHA-256: b35a4fcfe7eb4474b8ea45f5df33f131c0b8921f5c711f5655752ca880b5d5a7