Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c44fae20e1928f…

MALICIOUS

PDF

69.4 KB Created: 2021-03-13 16:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6868ad29abd830f1422cde7ee6b7299f SHA-1: cf309822d28fb92c12dae434f3d752df866192b8 SHA-256: 92c44fae20e1928fc260af9af1934a8f5f8998298cdb51ed89cf6020ddab80b3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wix?keyword=short+answer+rubric+pdf PDF link annotation
    • https://sirukume.weebly.com/uploads/1/3/0/8/130814715/runedovafos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_60325eec9072d.pdfIn PDF document text
    • https://nesaresivegixan.weebly.com/uploads/1/3/1/4/131453215/2190100.pdfIn PDF document text
    • https://zodukaveg.weebly.com/uploads/1/3/5/3/135345947/9528227.pdfIn PDF document text
    • http://copyrighthelp.info/70106753113zl43a.pdfIn PDF document text
    • https://tavugalijob.weebly.com/uploads/1/3/1/1/131164394/ridanoduxij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_601aabad0e632.pdfIn PDF document text
    • http://gajaxujifusokul.mygamesonline.org/85916532074.pdfIn PDF document text
    • http://brumbum6.xyz/99755112014prycd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372696/normal_6004e44200b18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372735/normal_5fd92f8d65f07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418575/normal_5ffe1f2c254bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojafeduzig.myartsonline.com/notaxavileruzovakimesava.pdfIn PDF document text
    • http://kuwitabetegipo.myartsonline.com/will_there_be_a_season_2_of_girlboss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55439139-6633-4ad1-bbe5-8f1b98bc4a9f/vesumeni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7152b98-1354-47ec-8c87-ad5c67d74c42/sodastream_instructions_manual.pdfIn PDF document text
    • https://bc1ffd8b-75eb-417b-8f1b-a2d0870937e7.filesusr.com/ugd/e2f197_ea4ad34265cc4b17b06c7f27b8fc8dbf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2350d12-b422-4548-9c4d-9b57c7092a05/72241363308.pdfIn PDF document text
    • https://d4bcd744-2348-4fe3-9006-05b2fcbd3cbd.filesusr.com/ugd/704566_7f40f82f70684cdbbe7965c1bd8aec68.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/02819f6d-3594-47fd-99c2-0df82297d42d/a_court_of_thorns_and_roses_synopsis.pdfIn PDF document text
    • https://45f91bdd-2b68-4e60-ae2c-b14373ae5332.filesusr.com/ugd/0d089b_9b9db36ee00c4925af091b7ed4692163.pdf?index=trueIn PDF document text
    • https://76f5a3e5-08d8-4581-9975-6c1b933a1845.filesusr.com/ugd/dbbd16_4ade44add549405fb9d7968cdbf5ab06.pdf?index=trueIn PDF document text
    • http://sugamane.onlinewebshop.net/minuvewirupufulofajozetux.pdfIn PDF document text
    • https://f803bf1b-e1c2-47f6-a41f-c9785c88fbd4.filesusr.com/ugd/bf07b1_eea50539a5a24cb5951a934280a5e095.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bddb2824-e508-492d-b9ab-b7680e08a358/the_tempest_shakespeare_movie_download.pdfIn PDF document text
    • http://povodakav.myartsonline.com/asma_tratamiento_2020.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD121 5548 bytes
SHA-256: 867a1b5971318288819372b4ae3b35157c20384f8776a58ec18281aa2d375cc2
font_01_sfnt_off0000e409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE409 10224 bytes
SHA-256: 1ca8e301f050ec50e943642838a3f84f137c3f9bfa6deb84510d7fe84564ef7c