Malicious PDF — malware analysis report

Static analysis result for SHA-256 266b876ca0484d85…

MALICIOUS

PDF

73.2 KB Created: 2021-02-27 14:21:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2563d0bb6ad807e3e4f9b35b2c750928 SHA-1: 5e4c5d3c89221936ed86ed8f152843f4de771cb3 SHA-256: 266b876ca0484d854afecc7224438363e56f8b851a5bcd8317a21ea353b998d0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://depewezuluro.weebly.com/uploads/1/3/4/1/134108544/fibinajeriles_wiwivadom_noramat.pdf.
  • 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://pelibifir.ru/award?keyword=how+to+use+up+mint+jelly PDF link annotation
    • http://beviluxenumiliv.mywebcommunity.org/nekefatevitidilexaduzofi.pdfIn PDF document text
    • http://vifezitenof.getenjoyment.net/2714299447.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/wgi6hqv/original_pong_game_value.pdfIn PDF document text
    • http://daludaja.getenjoyment.net/jumiwiparukifupav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393521/normal_602792806a51d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370266/normal_5fdff68968aa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425491/normal_5fd2df1dee38b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377414/normal_5fdefa67b6be0.pdfIn PDF document text
    • https://depewezuluro.weebly.com/uploads/1/3/4/1/134108544/fibinajeriles_wiwivadom_noramat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479474/normal_5ffdf78f53977.pdfIn PDF document text
    • http://vejofewi.iblogger.org/76561538232.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://najaxobefirag.epizy.com/49174598721.pdfIn PDF document text
    • http://derugibuxopil.epizy.com/lagu_sayang_2_angklung_jogja.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_off0000e51f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51F 4888 bytes
SHA-256: 8a7ab1580157d0e623edebace3cbf74d646157f249f666cef2d1e0dc894526f3
font_01_sfnt_off0000f5ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CA 10192 bytes
SHA-256: 17687898ec4b0f274fd2c77c76ce392ed47bdb433678ed2c2b41e00c1c568e8e