Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0e48a8ae6f7fa69…

MALICIOUS

PDF

73.6 KB Created: 2021-02-18 15:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f2757192718696315328d77fd1d560c6 SHA-1: da3eed8403452457a7553f236c71eb73c211438d SHA-256: c0e48a8ae6f7fa69aeb35e3037a46ab65cc5b8dc6ddcfa74e1b6b7d6e78ffce4
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/aws?utm_term=smartphone+tv+remote+app PDF link annotation
    • http://artyom.guru/curso_de_economiak85ur.pdfIn PDF document text
    • http://smotrikino.fun/santo_santo_santo_es_el_seor5la2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459468/normal_601e51c56d809.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500674/normal_5fd650f6b9fe9.pdfIn PDF document text
    • https://cdn.sqhk.co/birugafomafo/bgiIhd0/fimawopujetodib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466146/normal_60228f867dea8.pdfIn PDF document text
    • http://kepibarufot.22web.org/focusrite_scarlett_18i20_outputs.pdfIn PDF document text
    • http://mobile-media.moscow/simile_and_metaphor_worksheets_for_grade_7z9ecq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_5fd73a3ec0bec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390638/normal_601b6fee7bce6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493579/normal_601b7a89198e7.pdfIn PDF document text
    • http://jnatural.space/definition_of_global_marketing_information_systemkxei4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449973/normal_60145b9250ddd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464083/normal_602d8a2340dec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://borarujedumamut.epizy.com/borufonozonof.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_off0000e4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A4 5012 bytes
SHA-256: 55a180cbfe87630de875a88e5df1c4881c47cde3544fca6422a2fccee8c3970b
font_01_sfnt_off0000f588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF588 10704 bytes
SHA-256: f6b4f75b194ab7d5bf5d7963cd00610cd01dc851d9a788f4085c91be94882535