Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c03a53c61802a1…

MALICIOUS

PDF

45.3 KB Created: 2020-11-09 14:38:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 31091c86c7098a5483a896b3ee06506b SHA-1: e0ee1043583bbd2bd403a0f5906ca68c83b28d88 SHA-256: c8c03a53c61802a18dea9c03173ae6e5ca6751fdb095720e1770b42978d2be50
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/aws?keyword=gta+vice+city+stories+android+apk In PDF document text
    • https://soxupewo.weebly.com/uploads/1/3/4/3/134392520/jipitugodegab_bufakari_pixirumekopoju.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/2c029f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379241/normal_5f8e15c89c9ee.pdfIn PDF document text
    • https://lapamijivosesez.weebly.com/uploads/1/3/4/5/134507295/tukekazedove-siforam.pdfIn PDF document text
    • https://kirenokasanav.weebly.com/uploads/1/3/4/4/134445236/6326015.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/napomota.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419218/normal_5f998654d0155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418584/normal_5f98d0e7e32fc.pdfIn PDF document text
    • https://pamuvomamutafa.weebly.com/uploads/1/3/4/3/134305197/tematek-rukati.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/europa_universalis_4_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/analytical_chemistry_project.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/sherlock_holmes_deductive_reasoning.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/ninja_cat_the_game.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_off00006633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6633 5292 bytes
SHA-256: 22efd1171bf9ff4f7394a49316e63445cef8dbbb96315a0b56542aa96883389f
font_01_sfnt_off00007858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7858 15240 bytes
SHA-256: 823678b62e7c434c222afd9d83d99163b7f74a3ab13bc97bc2985208c532da73

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