Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf8cebd00bf166c…

MALICIOUS

PDF

73.2 KB Created: 2021-02-13 17:29:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 55c1f82fb66fd7ed9f7517221e6d3c8c SHA-1: cce2fc4aa8e85e85353f3df008d19fe66aef6f6d SHA-256: 3cf8cebd00bf166c4f382f9e269b21d7b5807cbc6708b69fbf5f8073dbac3404
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://maypoin.ru/wb?keyword=canon%20eos%20rebel%20t1i%20manual PDF link annotation
    • https://cdn.sqhk.co/miwataxanis/erAjaPJ/the_tiger_s_wife_chapter_5_summary.pdfIn PDF document text
    • http://arfesopt.com/906714612619j9rr.pdfIn PDF document text
    • http://ukranews.icu/ccna_2_chapter_4_quiz_answers_2018hw8gt.pdfIn PDF document text
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/lonire_diwimokopuxe.pdfIn PDF document text
    • https://ziwagunu.weebly.com/uploads/1/3/4/8/134883986/3052459.pdfIn PDF document text
    • https://polepufexiri.weebly.com/uploads/1/3/1/3/131379743/0db528.pdfIn PDF document text
    • https://maxanijalezo.weebly.com/uploads/1/3/2/3/132303118/3332212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492245/normal_6026cc2d955cc.pdfIn PDF document text
    • https://cdn.sqhk.co/liregevo/XzzXqKe/pelajak.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/kiejeZP/guns_of_glory_game_download_for_pc.pdfIn PDF document text
    • http://carluxepaint.site/givovivozusunobixi07c4k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://repefewuvu.epizy.com/educational_questions_and_answers_for_a_quiz.pdfIn PDF document text
    • http://wotimadugol.epizy.com/dolofoda.pdfIn PDF document text
    • http://sajipesexadagon.epizy.com/pezevegijivab.pdfIn PDF document text
    • http://xaligapuk.epizy.com/fediwedesolo.pdfIn PDF document text
    • http://mapureju.epizy.com/cpm_geometry_homework_answers_chapter_7.pdfIn PDF document text
    • http://subokud.epizy.com/marksheet_of_ignou_dec_2018.pdfIn PDF document text
    • http://fodixox.rf.gd/million_dreams_piano_sheet_music.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_off0000e4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AB 4928 bytes
SHA-256: d9e28b4e339bdd6c66dbbb2af23df551970b0c6fd1aa622ce7564f970ed37e92
font_01_sfnt_off0000f559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF559 10200 bytes
SHA-256: 64ebe710eda0c1b4444ea8b06ad4e7eb6bfecfc98b39164edf90bdabce1b1384