Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e32d3e98c175ca…

MALICIOUS

PDF

73.1 KB Created: 2021-03-23 15:43:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ae7525c3671aa1b217206143af7b0d5 SHA-1: 2cb4f04ed22e4eb9158692db6cc4e9e0ab8bcf3b SHA-256: c1e32d3e98c175ca11d95a57a57d411e49121c670e139ee91433dfb8f5ea8cde
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple external URIs and is flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, likely to obscure malicious destinations. The presence of embedded URLs and the overall structure point towards a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/award?keyword=essential+requisites+of+a+contract+pdf PDF link annotation
    • http://keysecret.ru/xeduneloxoxabekekagil9711.pdfIn PDF document text
    • https://cdn.sqhk.co/bepeguvovori/jcrjdhi/guided_reading_activity_economic_systems_worksheet_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/sotogademo/chiE4ij/pexujezegulo.pdfIn PDF document text
    • http://blu-ital.space/zevaximafoxavr58t5.pdfIn PDF document text
    • https://cdn.sqhk.co/rotogogoji/zr5Cgd9/free_music_download_for_pc_windows_8.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/sifotapidolekadezew.pdfIn PDF document text
    • http://karnaval.host/assure_instructional_design_modelyeuuk.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/jb27jdm/xepokimidugab.pdfIn PDF document text
    • http://kodiludo.iblogger.org/occupational_health_and_safety_lecture_notes.pdfIn PDF document text
    • https://cdn.sqhk.co/datimemovuko/ijcghBb/free_offline_niv_bible_for_iphone.pdfIn PDF document text
    • http://trynutra.shop/suwobafebav4wol.pdfIn PDF document text
    • http://natorg.fun/65641550372qn5lh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kixixiwibatogit.epizy.com/42466438920.pdfIn PDF document text
    • https://4192d618-ecd7-4808-8485-efd4d6773ded.filesusr.com/ugd/17a5db_fe741fe6caae44ebab05fdef38989f89.pdf?index=trueIn PDF document text
    • http://sewemira.atwebpages.com/bsc_agriculture_1st_semester_books.pdfIn PDF document text
    • https://5c9c3928-af7d-4195-9e43-9647d7263c15.filesusr.com/ugd/508998_000723683bbb4045924a9b6f85deb301.pdf?index=trueIn PDF document text
    • http://zakagoxufi.epizy.com/happy_birthday_card_template_publisher.pdfIn PDF document text
    • http://fopogovokikav.rf.gd/90807679108.pdfIn PDF document text
    • https://5c3e38fa-bf2d-4cda-bfdc-19e9a39f2227.filesusr.com/ugd/b3ada4_31d86f9c10814fdaa1a9d4eb6511b4f6.pdf?index=trueIn PDF document text
    • http://juzavogubi.rf.gd/lemenipagalegaxijotexaba.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EC 5232 bytes
SHA-256: 00d7905f3d1c7e0feb8aa7c9b838c5c220348dabc641647d1d84dfad18cf6c91
font_01_sfnt_off0000f2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C9 10128 bytes
SHA-256: 54c115b7832d0d644b3f3d518c38fa7c98932ccc6a5d52b59cf54c9c1dfede78

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