Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bfe21e381563b4a…

MALICIOUS

PDF

75.4 KB Created: 2021-01-27 06:16:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a48e226598fd24210f059037ebbb16d8 SHA-1: 7a23b1098ed246c3a75c5ecf0d5186d12e46e359 SHA-256: 5bfe21e381563b4a2a65c2b018c3a7023a231304d150e6685a849b3f41ddc63e
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://jacksth.ru/aws?utm_term=formation+chaudronnier+brest PDF link annotation
    • https://cdn.sqhk.co/sikibeve/ahbighi/26491105521.pdfIn PDF document text
    • http://prizinsta24.space/2014_toyota_tacoma_x_runner_reviews58jp.pdfIn PDF document text
    • http://moresukko.ru/451503595393d4sn.pdfIn PDF document text
    • http://center-about.com/boiler_efficiency_calculation_direct_methodc4owj.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/jahjgi2/82801820742.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/cJhbUgd/pizakoritepuwi.pdfIn PDF document text
    • http://itwomen.space/tilolewiladqrnpr.pdfIn PDF document text
    • http://gusitolife.iblogger.org/free_rehearsal_dinner_invitation_template.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/7hi2VlR/87143509210.pdfIn PDF document text
    • http://counterman.ru/speedball_ink_cartridgesbvhgn.pdfIn PDF document text
    • http://circulyarkadigital.xyz/tadipifemesuzx218r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pazipinabobon.epizy.com/sivibizelulozegudo.pdfIn PDF document text
    • http://nojosatu.epizy.com/roland_aerophone_ae-_10g_manual.pdfIn PDF document text
    • http://nulesuli.epizy.com/amma_amma_tamil_song_vip.pdfIn PDF document text
    • http://fazafof.rf.gd/neonatal_jaundice_2015.pdfIn PDF document text
    • http://zalowakudedakov.rf.gd/39030759294.pdfIn PDF document text
    • http://gumusijejokezit.epizy.com/how_to_become_a_successful_woman.pdfIn PDF document text
    • http://zewebuguv.epizy.com/bufabigutes.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_off0000e58a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58A 5244 bytes
SHA-256: 8b334b83198c0c28123fe8cc688ba822c6992b2239f294af2f3178b4cc0d0716
font_01_sfnt_off0000f723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF723 12724 bytes
SHA-256: 677e17b78ca397395c354c13bbc277dd9ec133c54334060d167dc9f781a101d4