Malicious PDF — malware analysis report

Static analysis result for SHA-256 46524deec868dfef…

MALICIOUS

PDF

78.3 KB Created: 2021-03-12 05:58:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 540447fe76c38f60cabb737339004845 SHA-1: 9d92b48d18140a55f00536df310bcb5896a4b99f SHA-256: 46524deec868dfeff3322e4a630f44543552f834d73b9fd022440f01f323bc80
146 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or scam attempt. The 'SE_CLOUD_DOC_LURE' heuristic confirms the document impersonates a cloud file-sharing service. While no scripts were explicitly extracted, the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly suggest malicious intent, likely involving the exploitation of PDF vulnerabilities or social engineering to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/award?keyword=pdf+editor+combine+pages PDF link annotation
    • https://merogowaxoku.weebly.com/uploads/1/3/1/0/131069891/vitezu.pdfIn PDF document text
    • https://vubanuta.weebly.com/uploads/1/3/5/3/135348855/ee18397494ffc08.pdfIn PDF document text
    • https://jakakatis.weebly.com/uploads/1/3/5/3/135323185/4299812.pdfIn PDF document text
    • http://pakekoramiduwin.getenjoyment.net/bukiweze.pdfIn PDF document text
    • http://nibewubixela.getenjoyment.net/8th_edition_kill_team_rules.pdfIn PDF document text
    • http://lowusonuraku.mygamesonline.org/glencoe_geometry_chapter_8-2_answers.pdfIn PDF document text
    • http://guzanarogenuje.iblogger.org/what_grease_to_use_in_kitchenaid_mixer.pdfIn PDF document text
    • http://zotikarida.medianewsonline.com/96123525706.pdfIn PDF document text
    • http://gejejasofubi.mywebcommunity.org/61602095429.pdfIn PDF document text
    • http://pazadixokumox.sportsontheweb.net/telumutepujosad.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://sabukizazuse.epizy.com/lagu_angklung_sunda.pdfIn PDF document text
    • http://muzulozak.atwebpages.com/a_to_z_practical_building_construction_book_download.pdfIn PDF document text
    • http://mojigoka.atwebpages.com/1009186475.pdfIn PDF document text
    • http://zupitatip.atwebpages.com/harry_potter_4_movie_quiz.pdfIn PDF document text
    • http://dixitexajujus.epizy.com/bekhayali_ringtone_pagalworld.pdfIn PDF document text
    • http://sitasuwa.epizy.com/guide_510x_jsa_nightlux_ir_400.pdfIn PDF document text
    • http://zolasot.rf.gd/33701927635.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/desde_que_edad_un_perro_es_adulto.pdfIn PDF document text
    • http://tevisub.rf.gd/the_gift_of_the_magi_questions_and_answers_for_class_6.pdfIn PDF document text
    • http://xikabuw.epizy.com/gotorufaba.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_off0000e8a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A4 5372 bytes
SHA-256: a9fdee5779ae853fd75251045b0f9b122efbc45fc4384e1af33e4a0bcd14a8b6
font_01_sfnt_off0000fac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC0 10372 bytes
SHA-256: f548738f375917776077f042526d9b651485e76248f223ba4f71551b7ae6c899
font_02_sfnt_off00011e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E49 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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