Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3862ad80ddd8b50…

MALICIOUS

PDF

65.2 KB Created: 2021-02-17 10:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2a818389fdb80d6c63d72c778197dc93 SHA-1: caa340af36c86ad8e175bd38d3935325ee091420 SHA-256: c3862ad80ddd8b505f46c6a84404271f01a08f691b5e35bb43b971c87acf27f4
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://jacksth.ru/aws?utm_term=example+phrasal+verb+answer+back PDF link annotation
    • http://lnstagramsupportinfo.com/45939947769x739q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486363/normal_6029c78cb709c.pdfIn PDF document text
    • http://trickyturkey.com/21903009879owa9l.pdfIn PDF document text
    • http://copyright-central-media.com/new_3d_games_apkyufol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421207/normal_5ffaf1a1e2c81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408479/normal_5feba66fede8d.pdfIn PDF document text
    • http://pay-order.info/ranking_das_maiores_folhas_salariais_do_futebol_brasileiromr0am.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/zusevamasor/kilcunda_surf_fishing_report.pdfIn PDF document text
    • http://xarifilaf.rf.gd/25092283657.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/gakonukuxujomu.pdfIn PDF document text
    • http://wilusifo.epizy.com/adobe_reader_2019_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/zowibatev/the_crush_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/famejejokuzajas.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/37326936757.pdfIn PDF document text
    • http://nemebikox.epizy.com/storyboard_script_examples.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_off0000bfdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFDF 5552 bytes
SHA-256: 4e96af601cba9e874f0398cb98577421a96a4bf68fb803a2b7dea52d2b04780c
font_01_sfnt_off0000d2ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AB 10872 bytes
SHA-256: af319787014052de1a0b1090af3d41dbd30fbfef3ac50480c7e207e4bb2658e8