Malicious PDF — malware analysis report

Static analysis result for SHA-256 39928218329fff4c…

MALICIOUS

PDF

82.4 KB Created: 2021-05-09 06:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6d2f713a81d2e3b01b07588994cbaf18 SHA-1: 91e387decc8ee853c3e060115f5d3a8092029c59 SHA-256: 39928218329fff4c02bf41f00b694b8ceecb70646344fe631342e9188659703b
146 Risk Score

Malware Insights

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

The PDF document uses a cloud document lure to trick the user into clicking on embedded links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of multiple external URIs, including those on disposable hosting, further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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/strik?utm_term=what+is+cloud+storage+in+simple+terms PDF link annotation
    • https://cdn.sqhk.co/mejomusajob/hm3jb08/repicvid_free_photo_recovery_software_restore_deleted_photos.pdfIn PDF document text
    • https://cdn.sqhk.co/pometobab/ugdidgi/basler_ace_camera_link_manual.pdfIn PDF document text
    • http://blognews.top/calendario_escolar_2020_a_2021_sep_hidalgogtd88.pdfIn PDF document text
    • http://niwopofe.scienceontheweb.net/45713731246.pdfIn PDF document text
    • https://cdn.sqhk.co/fugutexifi/ajhOYmE/baliterakavafomubejome.pdfIn PDF document text
    • https://cdn.sqhk.co/nugizape/ebhei2a/billie_eilish_instagram_photo_666.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/descargar_antivirus_avg_gratis_para_android.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/what_is_transfer_of_heat_class_7.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/avermedia_capture_card_software.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/maths_worksheets_for_grade_4.pdfIn PDF document text
    • http://doucheop.xyz/78406907746zg0ms.pdfIn PDF document text
    • https://cdn.sqhk.co/vikimono/Fgilscr/kexetidetokojaget.pdfIn PDF document text
    • http://noksipals.online/geological_time_scale_of_earthjjm17.pdfIn PDF document text
    • http://summ-green.fun/tegawedufofifu6z6a7.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/kenneth_cole_watch.pdfIn PDF document text
    • http://kemedejovon.getenjoyment.net/7_c_of_effective_business_communication.pdfIn PDF document text
    • http://all-system7.xyz/57927665798f3ep1.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/toyota_avensis_2002_service_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/jaselavujuwi/ynhcghw/6354706329.pdfIn PDF document text
    • http://update-win20.online/8046115663451vc6.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/cell_biology_research_paper.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gumomexad.onlinewebshop.net/abbyy_transformer_with_crack_free_download.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_off000103e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E5 5500 bytes
SHA-256: 12cfdc773c50192e7ff824ef576baab301dcecf9408f164561263d825114a9bc
font_01_sfnt_off00011674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11674 10952 bytes
SHA-256: e654c57bd143ef19732ced1c237c908fff980253650ee597574cdfe6666b7ffa

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