Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad3b2d0adbd2105…

MALICIOUS

PDF

74.0 KB Created: 2021-02-27 22:59:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 40a2552f88ebcbbd861314e032978daf SHA-1: 58ae9ad1bb05ee14661546748dd54481d622fafe SHA-256: 5ad3b2d0adbd21059968192f5b72a209805c9ef97d736972ea42e879b337f749
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://kowadesilokawu.weebly.com/uploads/1/3/4/2/134265693/pubexi.pdf.
  • 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://kuzutuzo.ru/wb?keyword=what%20is%20chapter%202%20lord%20of%20the%20flies%20about PDF link annotation
    • https://cdn.sqhk.co/boguzivipel/eqo9OMm/guess_word_game_app_answers.pdfIn PDF document text
    • https://kowadesilokawu.weebly.com/uploads/1/3/4/2/134265693/pubexi.pdfIn PDF document text
    • https://wipegozi.weebly.com/uploads/1/3/0/9/130969535/desozexeloxo.pdfIn PDF document text
    • https://cdn.sqhk.co/mivufarowiwi/oTshiB8/45721650651.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/c1ihUii/playstation_5_release_date_australia_price.pdfIn PDF document text
    • https://jirugewozori.weebly.com/uploads/1/3/4/8/134898712/sabeg_bikitelavi.pdfIn PDF document text
    • http://peteferix.mypressonline.com/xuvodivirisozelologati.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466370/normal_6012fa7c67878.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/he3hijg/tennis_racket_3d_object.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/hXiebur/galaxy_watch_3_review_45mm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372983/normal_600098fa98069.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gelofobomafagez.epizy.com/javikuve.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/61806252832.pdfIn PDF document text
    • http://dezabefuzureb.rf.gd/46914753211.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/pizovetuvurafetilobenor.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_off0000e45f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE45F 5528 bytes
SHA-256: a5d6b86e6643394688d09dea53c9d46fa7db3d2939fe4c187ee253193a89c302
font_01_sfnt_off0000f72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72F 10396 bytes
SHA-256: 0a5d54642ea15e4a8f702f35e7499e84c0ffacab6f56e2d757c1908dfdb3acbc