Malicious PDF — malware analysis report

Static analysis result for SHA-256 7780baebc3909bb5…

MALICIOUS

PDF

71.5 KB Created: 2021-02-23 05:02:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d767ff0456a34d5a7e1426c5068aa480 SHA-1: 3f1b4e4a3b2e6e44ff273568647529b07f05ec23 SHA-256: 7780baebc3909bb53c9b8087fc84057e208801cdfe582c74c97359bfe15d1577
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=science+study+guide+5th+grade+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4422372/normal_5feba01b2e7b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488335/normal_602520915d091.pdfIn PDF document text
    • https://wabomojufodeze.weebly.com/uploads/1/3/3/9/133999178/01b99510e60413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378621/normal_5fd7b733efeee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391319/normal_600215ed39e31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459320/normal_6013ca6086136.pdfIn PDF document text
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/8603067.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474222/normal_60312da6d0678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490936/normal_5fdad6fbd60da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406463/normal_5fdef7b657945.pdfIn PDF document text
    • http://keksik24.ru/bupulabubovanavekenrosm2.pdfIn PDF document text
    • https://giponijas.weebly.com/uploads/1/3/1/4/131453823/6707891.pdfIn PDF document text
    • https://vuvopovakufusoz.weebly.com/uploads/1/3/4/3/134342968/vukar-wulusefuxidupo-gekobakuvexu-dumuvanoze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410462/normal_5fe3dacd5bb78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406782/normal_60092e067d8cd.pdfIn PDF document text
    • https://mikezibe.weebly.com/uploads/1/3/1/4/131453119/30b26.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/dejazuvorira/kulizodifolarukoraripo.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/rumediputodizez.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_off0000da9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9A 5592 bytes
SHA-256: 3d1c52395c939f501022095a947e8edfec0beae61ba8b08c236fad981f4b49fd
font_01_sfnt_off0000edb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB7 10312 bytes
SHA-256: ef0de139d7148abf6d3aa06c967e63a91e3530659ac1295ba006d31434911ace