Malicious PDF — malware analysis report

Static analysis result for SHA-256 7659a29b0d30031c…

MALICIOUS

PDF

73.0 KB Created: 2021-02-21 23:54:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c9f739860172a9b8d3803b0c7cc92129 SHA-1: dc77c843f094f11de4f52a4a5b832fa747ecf9b4 SHA-256: 7659a29b0d30031c5bf4df25aa56ac79ee7bd69448d91c0c8d1670887ca79f49
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/wix?keyword=yu+gi+oh+mod+apk+unlimited PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453333/normal_5fe42e774492b.pdfIn PDF document text
    • https://tedudizoz.weebly.com/uploads/1/3/2/6/132683188/ludawefufoduxewodi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406782/normal_5fc90e1d29311.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470681/normal_601af0ada7c56.pdfIn PDF document text
    • http://tricitysikhs.com/692541749902un4.pdfIn PDF document text
    • https://marikikugawu.weebly.com/uploads/1/3/5/3/135326377/8460630.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/telkomsel_billing_android.pdfIn PDF document text
    • https://damobupakul.weebly.com/uploads/1/3/1/4/131453350/02c29537af2fba5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5fdc5ceb623df.pdfIn PDF document text
    • http://sewonmedix.ru/dividend_payout_on_balance_sheet7ogkl.pdfIn PDF document text
    • http://agentsoft.space/wigoben6jkho.pdfIn PDF document text
    • http://hairsprof.ru/credit_suisse_wealth_report_2017_databookg5v3z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473359/normal_602ea0895f025.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/ekha0hh/46973451815.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375515/normal_5fec35554b679.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_off0000e22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22D 5124 bytes
SHA-256: c38a3f4b61e25deac7c9d950f76b869cd3df18e4b26bd1b7b8fea3ab83caa1fc
font_01_sfnt_off0000f373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF373 10468 bytes
SHA-256: f7828739b450ff87dbb96815ab3f292d63a63779983bf51cf67872941a6b24bc