Malicious PDF — malware analysis report

Static analysis result for SHA-256 588a929b1adc8c4a…

MALICIOUS

PDF

69.6 KB Created: 2021-02-23 16:39:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 58ac6eabb6cb521b267f9a4fea9787f2 SHA-1: 5eb7b552d93200915e7a6d50d89ccff4545c2137 SHA-256: 588a929b1adc8c4afdfba1872a6bba5f4f7d9c745e556fa0b15d72527abbc4c8
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://jacksth.ru/wix?keyword=lost+in+the+desert+case+study+answer+key PDF link annotation
    • http://storezone.info/mokoluzim12i0y.pdfIn PDF document text
    • https://memarexegota.weebly.com/uploads/1/3/4/3/134366516/teratopelozume.pdfIn PDF document text
    • https://lanekugufer.weebly.com/uploads/1/3/5/3/135351315/c153f979543493c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422161/normal_601305a29625c.pdfIn PDF document text
    • https://vigofamuzozovi.weebly.com/uploads/1/3/4/6/134671609/wisej.pdfIn PDF document text
    • http://helper-badges.com/camera_360_apk_ioslblk3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407301/normal_5fc68e6107760.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448535/normal_5ff4291a6999f.pdfIn PDF document text
    • http://redtea.space/bruteforce_save_data_ps3_gratis6b6iz.pdfIn PDF document text
    • http://adminhalil.com/delete_search_history_google_app_androidjxlv7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464068/normal_5feb0158c834c.pdfIn PDF document text
    • http://lnstagramverifycentre.com/79780043356qznxt.pdfIn PDF document text
    • https://vukuzimina.weebly.com/uploads/1/3/4/1/134109202/aacbfa26e5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366336/normal_5ff50820d10be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404308/normal_5fd0dcf3abd60.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_off0000d4de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4DE 5192 bytes
SHA-256: c01aeeed533a72e807f4eadfc421b10f850278e4af9daac9813a9d5d8f45af50
font_01_sfnt_off0000e69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69E 10172 bytes
SHA-256: bd7ba20f6222927ed5efea21c151144b8595dc7ff9a06121a35ba0e2030e60c9