Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1b8f729c4d7514…

MALICIOUS

PDF

72.7 KB Created: 2021-02-25 08:11:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: aed3dfd3d19032cfb604f5d105bae8fb SHA-1: 1e91a172d19ecf36c5e58ef8d1942bb9d710d647 SHA-256: be1b8f729c4d751429da1429be0eaaf58f1587069b0f524980c5d45b360a98df
106 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://jacksth.ru/award?keyword=how+to+get+fl+studio+20+for+free+reddit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412599/normal_5fd7f93bc2c22.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/how_fast_can_the_body_heal_itself.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486763/normal_6020433eae0c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403543/normal_5fe3eaf91ec9b.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/ibF2ie5/jitudin.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/VIiiaZa/art_of_war_2_betrayal_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/xapewiwud/ii9jagd/xekojiwetitox.pdfIn PDF document text
    • http://morj.space/betebijoztvty.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476767/normal_6007f55881dd6.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzowadijavu/dTHaVDX/raystorm_sony_playstation_rom.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/8615268524.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/how_to_make_a_bridge_with_popsicle_sticks_without_glue.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471996/normal_5fd6986227c1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454179/normal_5feff43fd003a.pdfIn PDF document text
    • http://lelekelosutov.getenjoyment.net/camila_cabello_matthew_hussey_dating_timeline.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382429/normal_5fd7d156dd7df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467915/normal_602d80057b104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480904/normal_600f312ec95fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_601c7d5fdba83.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/xoranupudezodelupaliliwas.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_off0000e12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12C 5192 bytes
SHA-256: d8f86a486bc9a335134d804a38f5726babdf0305f3ebc23c71c14ef50c025e2f
font_01_sfnt_off0000f301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF301 9972 bytes
SHA-256: 4c980c71d3195e2d7f96d091d05e44c134a4b06e8bd2f74caf42d3d9cf4c5f1d

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