Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a130df81e1c84d…

MALICIOUS

PDF

66.8 KB Created: 2021-02-19 01:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 298f79ffb10ba0c11f8eebb62ff9411b SHA-1: 965d4cab2136e283f436bf8231c3063ba8f074b6 SHA-256: 11a130df81e1c84dd6490a8b48f62a74dfb93240fffddbee2f5de34b38e5210e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/123?utm_term=soundcraft+ui+case PDF link annotation
    • http://extrameets.fun/6280754472wexms.pdfIn PDF document text
    • http://cmb-societe.com/89012689753o5sj0.pdfIn PDF document text
    • https://tovijivesigaz.weebly.com/uploads/1/3/5/3/135327805/kimusolotili-pukuf.pdfIn PDF document text
    • http://presente-top.store/memakil5qhzj.pdfIn PDF document text
    • https://gepidoduxaw.weebly.com/uploads/1/3/5/3/135324144/nadesexonulu_gosodojiwepuv.pdfIn PDF document text
    • https://xufudigu.weebly.com/uploads/1/3/4/5/134515134/e1551.pdfIn PDF document text
    • http://sushibara.net/32332609660rmccc.pdfIn PDF document text
    • http://lnstagramcopyrigtservice.com/gestion_de_la_cadena_de_suministross89g4.pdfIn PDF document text
    • https://cdn.sqhk.co/tubadaluzafu/hhQdiFX/76678550612.pdfIn PDF document text
    • http://kartaidatodemeleri.com/pentatonix_hallelujah_music_sheettyy42.pdfIn PDF document text
    • https://zanolidades.weebly.com/uploads/1/3/2/6/132695759/2503107.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/iichj81/catan_universe_connection_problems.pdfIn PDF document text
    • http://itayoga.space/numerologa_angelicalahjnt.pdfIn PDF document text
    • https://jepunitapo.weebly.com/uploads/1/3/1/0/131070437/vaxadokebatofemusat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/fasurubemi.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_off0000c920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC920 5088 bytes
SHA-256: 17be3b813c1b533c91186756e9d6118ae8cfb715c86dab3f1c8fa3e68e670c96
font_01_sfnt_off0000da7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7A 10692 bytes
SHA-256: 8f368d66f0ba6cd4e3a84e8a8bc3b8739101bbbf95ea7e5eaf7f18a381e4d003