Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9af32ebb96dd67b…

MALICIOUS

PDF

74.3 KB Created: 2021-03-27 09:42:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 709b08d0cb47aaa342d7aebe4c106841 SHA-1: 93775fc71e717ec25eadf9dba8df462738cb6b50 SHA-256: e9af32ebb96dd67bedd05a58e2de876a55fd8be68b5db6c077cba206893f81b7
126 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous external URIs, including one pointing to 'lozipotod.ru', which is likely a phishing lure. The PDF's structure and embedded links suggest an attempt to redirect users to malicious websites, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://lozipotod.ru/123?utm_term=news+reporting+and+writing+12th+edition+ebook PDF link annotation
    • http://fokikizuxijem.iblogger.org/epidural_anaesthesia.pdfIn PDF document text
    • https://nojilanoxejajej.weebly.com/uploads/1/3/4/8/134856497/ffa6bb2b7bf.pdfIn PDF document text
    • http://stepka2016.xyz/adventure_academy_app_costy7evk.pdfIn PDF document text
    • https://derajuxojop.weebly.com/uploads/1/3/1/4/131452827/nidejekebokoni_sazemegoleruz_kukagitis.pdfIn PDF document text
    • http://fovikoxesaweziz.medianewsonline.com/pdf_file_format_example.pdfIn PDF document text
    • http://astrology-personal.online/las_funciones_del_sistema_endocrino_humanojpe7q.pdfIn PDF document text
    • http://pumorux.medianewsonline.com/antecedentes_de_la_contabilidad_electronica.pdfIn PDF document text
    • http://tinipen.medianewsonline.com/truth_tables_of_all_logic_gates.pdfIn PDF document text
    • http://raisinshub.pro/redoxupikixonuvezhuqy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452595/normal_6044fc8429799.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406208/normal_602a95c8aa81d.pdfIn PDF document text
    • https://jukamonasob.weebly.com/uploads/1/3/0/7/130740128/6168629.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413862/normal_604f5682f4016.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/db233d68-d1a3-438d-994f-ef365ed5ad89/zelalexodax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fc98cbb-e3c3-48d1-b14d-37388e30b601/44970092484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de5d71ed-e2f0-45dd-a732-188fbb250a11/avengers_endgame_cast_salary.pdfIn PDF document text
    • http://jaweratiz.atwebpages.com/kozorujipadox.pdfIn PDF document text
    • http://sorisavitekinuj.onlinewebshop.net/mcp61pm-hm_nettle3_bios_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e5c4afd-7a3f-4865-a2a9-7e33b8916a2b/petogu.pdfIn PDF document text
    • http://lifugebavu.rf.gd/xasakejiwezarowineba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f46b4361-7008-469b-bd47-bbe9ed3a4916/62673124633.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_off0000e696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE696 5640 bytes
SHA-256: 9e9fe1ae4e8fb79d69b31b676727dc8852066aa4b9de2fc971f3e2b95e524741
font_01_sfnt_off0000f9d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D3 9868 bytes
SHA-256: c0e1859bd512ae40595c304520d3199dd644b8ca6b549aa8030415f6cddac022

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