Malicious PDF — malware analysis report

Static analysis result for SHA-256 302c19586ba112c1…

MALICIOUS

PDF

71.2 KB Created: 2021-02-26 04:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 3886c451c8c14b8d642f3703069e59bc SHA-1: 51284080cbae764130c5da8ac4703c4794f7f46e SHA-256: 302c19586ba112c1b8b3d14f05ef748e449fc1eb1bc5597dd1555dc099ab0a1c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wb?keyword=how%20to%20write%20natural%20log%20in%20webwork PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417220/normal_5fd9dd12d85d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369926/normal_5fe568a00f1c0.pdfIn PDF document text
    • https://najigojuvunijo.weebly.com/uploads/1/3/0/8/130874658/wirovakisixopa.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/32809843651.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/40478895415.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450356/normal_5fcc0a80da553.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/building_maintenance_plan_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426425/normal_5fdea77e88742.pdfIn PDF document text
    • https://nuzuloluxeguvox.weebly.com/uploads/1/3/4/8/134874948/panavemurovulebifulo.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/dilosixodinoge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pojozija.onlinewebshop.net/nawaruwotojafigobudagit.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/nufedikifepakukemuniwapaw.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/vertex42_calendar_template_for_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/55036159808.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/arcsoft_photostudio_2000_free.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_off0000d738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD738 4932 bytes
SHA-256: 7004787998baef20c0545f6ed9b6a753f9a73fccfff990bc3fd6e62b2cb00369
font_01_sfnt_off0000e81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81D 12428 bytes
SHA-256: 4aa87f60aab1464ece1291366f3fe507738c460944c11f58eb65a60360fc8b2a