Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8baa38a22cd8f36…

MALICIOUS

PDF

68.2 KB Created: 2021-04-18 22:33:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: d510c0821a80fdba08adf3fafc253934 SHA-1: ad18cf5f25c8d42706086a428023d40f403db90a SHA-256: a8baa38a22cd8f360c4511eeacb5e2fb810868e875bb21f633b2915b19122ccf
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://nipisod.ru/strik?utm_term=forrest+m+mims+iii+books+pdf PDF link annotation
    • http://noxogejukebe.mypressonline.com/what_are_the_two_main_reactions_of_cellular_respiration.pdfIn PDF document text
    • http://xisumagogali.getenjoyment.net/caging_skies_christine_leunens.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/balsamiq_mockup_tool.pdfIn PDF document text
    • http://noncomform.space/war_of_the_roses_york_family_treezgklj.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/65437150320.pdfIn PDF document text
    • http://sivesesugipode.scienceontheweb.net/vodidikazokifexojaro.pdfIn PDF document text
    • http://kinunilerivof.iblogger.org/barron_s_gre_vocabulary.pdfIn PDF document text
    • http://lalabomujulimof.mywebcommunity.org/rangkuman_materi_amdal.pdfIn PDF document text
    • http://kafalukuwemi.mygamesonline.org/fuxedorajes.pdfIn PDF document text
    • http://kigirifaduguv.getenjoyment.net/27406439679.pdfIn PDF document text
    • http://interior.estate/asus_x79_cpu_supportph6ev.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/madras_university_consolidated_marksheet_application_form.pdfIn PDF document text
    • http://terakusinuw.mypressonline.com/metabolisme_dan_katabolisme_lemak.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cef7.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cef7.bin)
    • https://db244590-af71-4c33-bd6e-2f8f55f31281.filesusr.com/ugd/fdab61_9fb2fbf162eb41e780f1391a850731f1.pdf?index=trueIn PDF document text
    • https://6f2fb29c-15f2-4b08-b525-3eb91a7f0a41.filesusr.com/ugd/c3548c_32f07b88777c45ee92dcb9f68f0903b2.pdf?index=trueIn PDF document text
    • http://naxepedawizozet.onlinewebshop.net/action_verbs_pictionary.pdfIn PDF document text
    • http://gisivem.epizy.com/doa_selepas_baca_yasin.pdfIn PDF document text
    • https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_c8b4c9ca4f11419abfd2fc518b76bea3.pdf?index=trueIn 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 extracted file (font_00_sfnt_off0000cef7.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF7 5104 bytes
SHA-256: 595d333e686ddd25f45890669ff2dff3747686ea0c98dc3be4d68bb3a7554f0b
font_01_sfnt_off0000e03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03C 10512 bytes
SHA-256: 27b0eb2f609ab1a15818395b4f2b0254b9d64266e56929a8a0db96f52201f48c