Malicious PDF — malware analysis report

Static analysis result for SHA-256 135d5f3ede7aa392…

MALICIOUS

PDF

74.1 KB Created: 2021-02-19 18:46:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 645a1a1ba15b7fd000b8e3c41128a1b6 SHA-1: 8829e685168f348156044b46e26e2f79a899b76a SHA-256: 135d5f3ede7aa39236210a938c6c4d8de6a6cbc67a1069e55abaa85917fb4b77
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://bologen.ru/wix?keyword=broken+down+cowboy+lyrics PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450045/normal_60000596dacac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452624/normal_600582d367914.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402718/normal_6023028ebb017.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/fIMjdLW/60279365512.pdfIn PDF document text
    • https://fokomawirofuteb.weebly.com/uploads/1/3/0/9/130969657/sigixikik.pdfIn PDF document text
    • https://tuzokoluxalof.weebly.com/uploads/1/3/1/3/131382257/sasope.pdfIn PDF document text
    • https://cdn.sqhk.co/ramazunor/idkibgf/25654232903.pdfIn PDF document text
    • https://wuzitefagoxu.weebly.com/uploads/1/3/1/8/131856046/f54a6c16e7f1e21.pdfIn PDF document text
    • https://cdn.sqhk.co/rorifugera/NW5DhdT/geometry_rush_unblocked.pdfIn PDF document text
    • https://bituxusod.weebly.com/uploads/1/3/4/3/134347303/3ed00e5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tawosowi.epizy.com/convertir_clavier_qwerty_en_azerty_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/67731450983.pdfIn PDF document text
    • http://fozubada.rf.gd/defense_travel_system_constructed_travel_worksheet_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/muscle_naming_crossword_anatomy_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/math_fractions_worksheets_grade_1.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_off0000dd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD70 5168 bytes
SHA-256: 262f68df4ed5d9727c4e6b4b673c2f41b82e067aa3a8760a0fd3504e67fdd078
font_01_sfnt_off0000ef35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF35 14280 bytes
SHA-256: 527c0d3001282812351f5b15f5b178f311fc5f1d642cc93e4bd9cddb720dc5b8