Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48737b61881aefa…

MALICIOUS

PDF

72.4 KB Created: 2021-02-27 18:38:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b3e3116a92a2a7599bebb6ae8939022d SHA-1: 99df3ff0d3ca3290c1ae60518cd2a7e0a7160ba9 SHA-256: c48737b61881aefa1c2e6ae06cd64cdce124586cf1c1fe173108c2c00b13b160
166 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://gimoguvi.ru/wb?keyword=network%20security%20key%20wifi%20password PDF link annotation
    • http://shimano-stradic.ru/203210440486lbms.pdfIn PDF document text
    • http://makamar.tech/63859311404njpb0.pdfIn PDF document text
    • http://luminar4-download.xyz/bomaxilaxome9dxmu.pdfIn PDF document text
    • http://ag-management.space/50037781774uz8ka.pdfIn PDF document text
    • http://testertumentum.space/dukariwixopqvuz.pdfIn PDF document text
    • http://silver35.ru/45644991611y9z03.pdfIn PDF document text
    • http://freshmind.net/the_signal_and_the_noise_downloadznsm3.pdfIn PDF document text
    • https://pijefezumiw.weebly.com/uploads/1/3/1/3/131379255/wekibosesug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458122/normal_5fe0c74267f4b.pdfIn PDF document text
    • http://purpless.vip/dusatevupututajatufiuu7r.pdfIn PDF document text
    • https://jedopebo.weebly.com/uploads/1/3/4/8/134889916/6735232.pdfIn PDF document text
    • http://registrat.space/ilustraciones_para_predicarwaxqm.pdfIn PDF document text
    • http://questotzvezd.space/grounded_theory_approach_to_analyzing_qualitative_datawh2t7.pdfIn PDF document text
    • http://tegor.xyz/clash_of_civilizations_foreign_affairs_summaryksayd.pdfIn PDF document text
    • http://com-servers.online/beat_slayer_gamekvjws.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dcc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC0 5344 bytes
SHA-256: 585311108aec23ac12a8b11765fc9e8470c75b83e7e3b6670061c49e1d286420
font_01_sfnt_off0000ef24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF24 11104 bytes
SHA-256: 547f415cdf553234b975cbd6e24c8f1fb6e8ac0f2af482e18990ad0672be753c