Malicious PDF — malware analysis report

Static analysis result for SHA-256 a648ca967f59ea5e…

MALICIOUS

PDF

84.8 KB Created: 2021-03-18 15:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c5a6cfbed5323dbd00c321c619082ea4 SHA-1: 5e431acfce3553d153f3c8767e68b9a82c040569 SHA-256: a648ca967f59ea5ebaacc18ecbec8750178fde9059ddae7a087cc1ff4daac659
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious redirection tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/strik?utm_term=cannon+safe+model+numbers PDF link annotation
    • http://kalidejomepajo.scienceontheweb.net/what_is_the_romeo_and_juliet_law_in_indiana.pdfIn PDF document text
    • http://roboludawu.mywebcommunity.org/lopasib.pdfIn PDF document text
    • http://lixodamevurobar.mygamesonline.org/87879236639.pdfIn PDF document text
    • http://vugaganopofom.mypressonline.com/tedofogo.pdfIn PDF document text
    • http://weridif.medianewsonline.com/93931060909.pdfIn PDF document text
    • https://cdn.sqhk.co/butiluluvuk/lNJkZCj/5407752762.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388037/normal_5fcd9aaf5242b.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/list_of_transnational_social_movements.pdfIn PDF document text
    • http://gagefiwirimat.medianewsonline.com/pabugogazuriwemukikufabe.pdfIn PDF document text
    • https://cdn.sqhk.co/nedovipirumu/cJhihaO/hd_filter_camera_photo_editor_photo_collage.pdfIn PDF document text
    • https://cdn.sqhk.co/tapolixoz/8jbggjd/charles_schwab_affidavit_of_domicile_form.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480886/normal_6003ec0b32943.pdfIn PDF document text
    • https://cdn.sqhk.co/dujujema/gcgck0P/zogasijufijujedujek.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/25639307348.pdfIn PDF document text
    • https://cdn.sqhk.co/munenetifu/iniargf/comparison_of_adjectives_worksheets_for_grade_2.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/95496891804.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/ibn_arabi_quotes_in_urdu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_60210177da062.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/jedarufoxikunudigali.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/what_constitutes_a_breach_of_trust_and_confidence.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/12967463867.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rulopumo.epizy.com/a_t_f_full_form.pdfIn PDF document text
    • http://tenezozujilajiw.rf.gd/canon_de_belleza_actual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC3 4968 bytes
SHA-256: db72928081ed18c69ae810eb7a6347389dad881b3fa375e5f82763134cde3ce8
font_01_sfnt_off00010d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D85 12112 bytes
SHA-256: 64bea411eb6605ccd083f18c9b7645787017c7f2bd48ba40ad967111669269dc
font_02_sfnt_off00013623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13623 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2