Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4bdb92f0c8f027…

MALICIOUS

PDF

76.0 KB Created: 2021-01-31 04:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d8684eb3c054a39c59cd4f5e76ab6f1f SHA-1: bacb2b42d19911006ad9429ebc7fec94c0eb9f72 SHA-256: fe4bdb92f0c8f027954991030b193551352f9cec3d9343687617a4661a674be0
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://seumenha.ru/aws?utm_term=bed+making+procedure+in+nursing+pdf PDF link annotation
    • https://cdn.sqhk.co/zurefaxenov/h4gfheH/microbrand_watches_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408878/normal_5fc8662eba832.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369916/normal_5fee7d7f091a0.pdfIn PDF document text
    • https://cdn.sqhk.co/rutisifelom/hgiawhb/14675331771.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424935/normal_5ffe437174140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_6009c91b601df.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/hFm8ier/mojizizixezevitetomebij.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/iiOjcvt/solitaire_games_for_money.pdfIn PDF document text
    • http://berozava.iblogger.org/skillet_comatose_album_zip.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/salosibejodod/2143753854.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/26893399479.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/emx_carsense_303_manual.pdfIn PDF document text
    • http://mifumupesa.rf.gd/54456357252.pdfIn PDF document text
    • http://mumupaju.epizy.com/64172295631.pdfIn PDF document text
    • http://bozudob.epizy.com/86216629671.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_off0000eb63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB63 5556 bytes
SHA-256: 07a44de914111ff7240ee657986f6915c56792e0cc6d3757bd918a851f91a162
font_01_sfnt_off0000fe3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3C 10856 bytes
SHA-256: a04d68d6947fc14239576ff33b644c7bf2966fd61ad4bc289a5bfabc1fa2622b