Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb916820c0b0547e…

MALICIOUS

PDF

78.2 KB Created: 2021-02-08 04:41:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 677c4977445c26d1d30f4f65c4e380e8 SHA-1: f642d82e73c87bda856be7df68a29a6941f9bebc SHA-256: bb916820c0b0547e0fe3ae75ed5f544d6d006b7b0743ecb8bedf90f38e1585aa
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://druttle.ru/wb?keyword=black%20american%20movies%202018 PDF link annotation
    • https://cdn.sqhk.co/feguzuvubut/icNgdQM/download_final_fantasy_dimensions_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jujadiziga/5icbwhg/64160062670.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/gEjijiP/us_military_drones_cost.pdfIn PDF document text
    • https://merogowaxoku.weebly.com/uploads/1/3/1/0/131069891/wakexufi_jasefemawurej.pdfIn PDF document text
    • https://ripumunilemaz.weebly.com/uploads/1/3/5/3/135302863/lerejaxapajeb-jarulotonufu-sarovagi-jezavow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_5fdb9e19aca85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444622/normal_5fcda245e8f63.pdfIn PDF document text
    • http://paksorond.xyz/infinity_pool_backyardrf05y.pdfIn PDF document text
    • https://balolenitazir.weebly.com/uploads/1/3/1/0/131071159/vanukamedi-bijow-zaviwitek-bulinela.pdfIn PDF document text
    • https://wamazuwo.weebly.com/uploads/1/3/1/3/131380988/4938375.pdfIn PDF document text
    • https://kaferafodi.weebly.com/uploads/1/3/0/7/130775544/89509.pdfIn PDF document text
    • https://cdn.sqhk.co/faxenukev/ehjHieg/unikitty_save_the_kingdom_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pagiwufuvefukuf.epizy.com/cisco_packet_tracer_64_bit_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/vakukazen.pdfIn PDF document text
    • http://bozalusi.epizy.com/gevuloxilijuk.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/joseph_s_coat_of_many_colors_template.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/49020773463.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/assassin_s_creed_identity_apk_android_1.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_off0000f408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF408 5640 bytes
SHA-256: eeaf0871a7af522b512e2e89e947de44bc6179705247188a61c6242b7759560f
font_01_sfnt_off0001072b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072B 11348 bytes
SHA-256: 10a080de16ed41f19cf0b3f31adf1e2535a2756852a642921130a81b4f35c1fc