Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a2ee4380d8c561…

MALICIOUS

PDF

79.4 KB Created: 2021-03-17 02:54:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e530f67814f494f8c8967d5ace7b2f2e SHA-1: 2ecd0bfa071a80a896df913b675f767b48845dd1 SHA-256: f3a2ee4380d8c56167c879910515698e9828a5a6ca23e9f4f73b95c45c7a4963
186 Risk Score

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 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://jumiwimov.ru/strik?utm_term=first+alert+sco5cn+combination+smoke+and+carbon+monoxide+detector+battery+operated PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4494877/normal_60196a7aebe1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412174/normal_5fc74c75e656f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415929/normal_5fe851bd0ffae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393033/normal_5ffffcb02d58c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473030/normal_5fdf763e4bcda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/04e1f1e9-0416-4a4d-8971-45f82a070970/how_much_does_it_cost_to_install_a_heat_exchanger.pdfIn PDF document text
    • https://645c32c3-7e99-4959-b93b-7980205539d7.filesusr.com/ugd/30a31c_d6322bee60af4d21b5a818eec0ae7761.pdf?index=trueIn PDF document text
    • https://11484d69-1612-41b9-9199-165df1f08223.filesusr.com/ugd/e2f197_4c2df5dc07ee4ceabb93a8afdbaee596.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f6327d5-4a33-4be2-b3fa-28231e4c7414/how_to_connect_your_dish_hopper_remote_to_your_tv.pdfIn PDF document text
    • http://fufifaramulemi.rf.gd/taminebibakarupunimulako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9b83fb1-1faa-4306-9f49-1255fb5e1d8f/17262553170.pdfIn PDF document text
    • https://1b6fbac1-9b66-4609-9151-81f5d4c316f7.filesusr.com/ugd/5e81b9_96493aff47a5405ebe3c2c50c22dbb2d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9573016-e2cc-4a5f-aed5-dbc8e8a622b4/suwukinon.pdfIn PDF document text
    • https://f2f8a3c9-3ea7-4a25-b7e2-3e2749f32899.filesusr.com/ugd/f0e51d_9a6a33c187a3417b9451be0e30e67581.pdf?index=trueIn PDF document text
    • http://zebofazedixa.rf.gd/wurufezagofatev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c3896cb-590b-4474-8504-4a736b03c292/juraxinox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9478ff2d-a542-4b30-bf15-bfd6c1066273/how_much_is_the_salary_of_an_ethical_hacker.pdfIn PDF document text
    • http://nitiparavedo.epizy.com/nuzudepuwerevijub.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_off0000f647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF647 5672 bytes
SHA-256: a0a6931922c1e0716e74291d2978ad473ace1145347ff2f7fe5ed9c150b2aeb8
font_01_sfnt_off00010985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10985 10600 bytes
SHA-256: 7ae061908308b217f53d5eb766fe6a736f063f84b28280bb9b4c001f9a8cd553