Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf96048a53e5f0ab…

MALICIOUS

PDF

74.0 KB Created: 2021-03-02 03:05:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6c69a7f04f17f72f3093ec7ac1a28935 SHA-1: 009717a599a0ff44f51a137094d919f5b3700b3b SHA-256: bf96048a53e5f0abe3506077383d115f50c75b1e65a57ef8cfcbb992a7c3dc25
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wb?keyword=can%20a%20trustee%20sell%20a%20property%20uk PDF link annotation
    • https://cdn.sqhk.co/lisupixiwe/fUgjhc4/drag_race_3d_apk.pdfIn PDF document text
    • https://lanekugufer.weebly.com/uploads/1/3/5/3/135351315/loxufogidewakufa.pdfIn PDF document text
    • https://napopetonepew.weebly.com/uploads/1/3/1/1/131164038/7159524.pdfIn PDF document text
    • http://italysummer.space/kinivadorolivaj4x.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/6SjajeY/26386313619.pdfIn PDF document text
    • https://cdn.sqhk.co/zuwiwejagub/4ii3jax/84684948752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481671/normal_5fd9a0efd7ec5.pdfIn PDF document text
    • https://cdn.sqhk.co/kojetozativ/Krhghfo/kugumatajosug.pdfIn PDF document text
    • https://taretowixulu.weebly.com/uploads/1/3/1/0/131070971/7595398.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5fde861c6a711.pdfIn PDF document text
    • https://papuwupiruji.weebly.com/uploads/1/3/4/3/134348025/23f587d022cdb0.pdfIn PDF document text
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/ferej.pdfIn PDF document text
    • https://cdn.sqhk.co/medujebukoma/rzrAicO/word_farm_crossword_cevaplar_180.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471275/normal_60103f8854808.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379474/normal_5fffa593da1ef.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_off0000e67b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67B 4884 bytes
SHA-256: b4a55d6a8b2c928eb357aca5b1095e7e16333e075dee6556239e48b7968248c3
font_01_sfnt_off0000f72c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72C 10580 bytes
SHA-256: dc8a504049c05ff9eae7386ac11fee38871bb94e2ea1aeaac6de78e99e54039c