Malicious PDF — malware analysis report

Static analysis result for SHA-256 625e18dbe0180502…

MALICIOUS

PDF

73.0 KB Created: 2021-02-25 19:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 32cee4f07be7940e7efa7eaf655f3a9f SHA-1: 1526312d7bcad0e92a2a4880716d1b73ee17de6f SHA-256: 625e18dbe018050249ab5b67b07cab6734073a8cb881a10a7405e8c1ba002c94
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://leonvi.ru/wix?keyword=cambridge+university+press+desk+copy PDF link annotation
    • https://luzulobopado.weebly.com/uploads/1/3/2/6/132681737/7411129.pdfIn PDF document text
    • http://wow50.pro/15005535004m5ig5.pdfIn PDF document text
    • https://cdn.sqhk.co/zupivikeg/3hbjfgi/murder_mystery_theme_party_supplies.pdfIn PDF document text
    • http://strapslap.online/nys_dmv_drivers_manuallsl9n.pdfIn PDF document text
    • http://podarokinsta365.site/58473677666ixc1h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5fd153e6c8135.pdfIn PDF document text
    • http://radanews.site/zerebujoq1qp2.pdfIn PDF document text
    • https://mekapejodefab.weebly.com/uploads/1/3/4/7/134740006/7cca3423d32595.pdfIn PDF document text
    • https://mexukisigugat.weebly.com/uploads/1/3/4/7/134702857/181791d51.pdfIn PDF document text
    • https://cdn.sqhk.co/lokalofobox/cNqgejd/mabibuwazus.pdfIn PDF document text
    • http://lofitner.buzz/bidizedokesiseroluylhzm.pdfIn PDF document text
    • http://buloshnaya.site/how_to_use_a_foodsaver_vacuum_sealing_systemw5fcr.pdfIn PDF document text
    • https://zirodamabesad.weebly.com/uploads/1/3/0/7/130740068/mofizitikeru_fixuliputo.pdfIn PDF document text
    • https://guferewefozitak.weebly.com/uploads/1/3/4/3/134393558/katol_xamori_vifarapisolakuk_wefofat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387711/normal_5fd676c242c86.pdfIn PDF document text
    • http://uscarinsurance.info/218358333412vucj.pdfIn PDF document text
    • http://musofiron.ru/ximopadoderesl2z35.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_off0000df86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF86 5632 bytes
SHA-256: 705a694717c927461d9f0b620641c9741d7e087526f1b56f143573785e6cc6f8
font_01_sfnt_off0000f29e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29E 10688 bytes
SHA-256: 74929ee53fc2f79c350ed9b1d9c9e583c9d33cb325fe8f7fdd866b49a2f08b7a