Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fbb58fc4f84bd9b…

MALICIOUS

PDF

70.1 KB Created: 2021-02-10 18:48:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 057e1579532b9ab3e2599ed6cade83d1 SHA-1: 4ec28d4f1a844e84fcfbbd42862aa4b907087737 SHA-256: 1fbb58fc4f84bd9bca7442ad9cf618f76d42394a94da1882763dbccdf7bbc738
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://seumenha.ru/123?utm_term=mass+media+law+18th+edition+pdf+free+download PDF link annotation
    • https://dafelubuvotaxid.weebly.com/uploads/1/3/4/7/134753950/6548.pdfIn PDF document text
    • http://igbusinessabouthelp.com/3771626586ac2jr.pdfIn PDF document text
    • https://cdn.sqhk.co/wiluxuko/LVnLagf/bass_pro_shops_springfield_mo_shooting_range.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445130/normal_6009d46111ecf.pdfIn PDF document text
    • https://juzubuju.weebly.com/uploads/1/3/4/7/134703155/8faced8626c9.pdfIn PDF document text
    • https://cdn.sqhk.co/doxufojixene/bNjbOjf/simple_business_plan_examples_for_students.pdfIn PDF document text
    • https://pipefedib.weebly.com/uploads/1/3/1/3/131383483/2021987.pdfIn PDF document text
    • http://vinorama.fun/18509675510bc33n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426421/normal_600f9d2bf0d81.pdfIn PDF document text
    • https://vixalabalu.weebly.com/uploads/1/3/4/3/134396729/017be4d80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411923/normal_6004a2fc79070.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485152/normal_601d8cc35509c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kalotiwinilobiw.epizy.com/lojavenivobu.pdfIn PDF document text
    • http://giratas.epizy.com/23142406513.pdfIn PDF document text
    • http://wuxodevidupibe.epizy.com/platform_7_new_book.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_off0000d16b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD16B 5624 bytes
SHA-256: 569454c29b44d5527aaecf904240093f5f7005b3cd2477c600e88f1ad19801bd
font_01_sfnt_off0000e486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE486 11388 bytes
SHA-256: c3281bc026448d6735ef5a4ca67ed14e54158987b50ba2202ef33b4b6e722aab