Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0be2e8177eb9000…

MALICIOUS

PDF

72.9 KB Created: 2021-02-08 19:48:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9404475b76a8f0aa173ef4f83b26eb3c SHA-1: 40b92a38d9c8bb91b564fed9f7711d29050d6d7f SHA-256: d0be2e8177eb90001ac35e625d285f9831337a7b96bf0a33e9f6a214b73b9f94
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
  • 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://leonvi.ru/wb?keyword=burning%20platform%20business%20definition PDF link annotation
    • http://shoop-fg.ru/nipunefogaxilu6jfbo.pdfIn PDF document text
    • http://surevixa.22web.org/39465761156.pdfIn PDF document text
    • http://copyrighthelpbusiness.net/37207435900l5xc4.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/Ftjjjh4/granny_s_kitchen_menu_hot_springs_ar.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/bjeGIdy/webijazewesupisoxizigale.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/FgfmiiF/tangled_soundtrack_in_spanish.pdfIn PDF document text
    • https://taduvovu.weebly.com/uploads/1/3/1/8/131871704/2809af6851.pdfIn PDF document text
    • http://confirmationhelpcenter.com/tawexatilamokapiko4moyo.pdfIn PDF document text
    • https://cdn.sqhk.co/zopimoforaja/iCBhi4d/growing_crops_underground_minecraft.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447101/normal_600754412c2fb.pdfIn PDF document text
    • http://baranaydin.org/152249016239h3kd.pdfIn PDF document text
    • https://zawiwiguxasawum.weebly.com/uploads/1/3/0/7/130739629/buwizorugaxemuj-sataxatav.pdfIn PDF document text
    • https://xogukozatakik.weebly.com/uploads/1/3/1/4/131453421/dfc5423686e.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/ib4QaTw/my_att_directv_bill.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuxiluruzijova.epizy.com/free_ballet_dance_video.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_off0000deee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEE 5552 bytes
SHA-256: 76a521319d6e0113725b9f33aae70571539d2019330b522bc7f343161d300e69
font_01_sfnt_off0000f1b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B4 10928 bytes
SHA-256: 317be316ad91199a62d8f3248fd49e21e674f20c4aadf27a114864851fac1859