Malicious PDF — malware analysis report

Static analysis result for SHA-256 583028cfeeb7299e…

MALICIOUS

PDF

73.1 KB Created: 2021-03-17 13:21:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 211dfc0e5c5c7395e0cf2a1fc49033a0 SHA-1: 199117a61b034c2e048df2da0c95e1aeaaf1fa57 SHA-256: 583028cfeeb7299e3be3a8b1338dfb7f28fe9cb6b740f34b7ded310aa9d1ce89
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a primary focus on directing users to a suspicious domain for game-related search results. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://xezojetit.ru/wix?keyword=swords+and+souls+unblocked+armor+games PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449990/normal_6030fbca10109.pdfIn PDF document text
    • https://cdn.sqhk.co/lomokubaf/cjgvQgc/xarigadosufugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_6051ab490e4fb.pdfIn PDF document text
    • http://pegixudovojap.iblogger.org/brachypelma_vagans_breeding_report.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465388/normal_5ffa89f4ec010.pdfIn PDF document text
    • https://cdn.sqhk.co/puzusagilem/hjjTgi2/platform_1094_tripadvisor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444866/normal_6041e85b975eb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nabeluropezoli.rf.gd/tosuwesozubol.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/android_studio_find_gradle_home.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/butobon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c268a86a-508a-48af-aa9a-ee99c4263e31/sex_education_3_temporada_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9607a2f-7082-48b2-b3bc-424797ab870c/html_and_css_design_and_build_websites_drive.pdfIn PDF document text
    • http://wemurabasuxekux.rf.gd/historia_de_mexico_tercer_grado_de_secundaria.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/litezoge.pdfIn PDF document text
    • http://xafasefulunasa.epizy.com/aggiornamento_whatsapp_per_android.pdfIn PDF document text
    • http://kalumeli.rf.gd/regiwomudevure.pdfIn PDF document text
    • http://lodusebivepakef.epizy.com/pulenazajiwutufagoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf69cc00-0d8c-4a68-912f-7799f0797890/soccer_training_with_cones.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/455952d0-c2f3-4f87-970a-a6fa99937878/how_to_use_irobot_braava_380t.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5639f6d-9e14-43c7-a88e-e75fdb98265f/samsung_nx300m_camera.pdfIn PDF document text
    • http://jijuvusibob.rf.gd/how_much_does_a_service_miniature_horse_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/food_safety_management_system.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_off0000ddd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD2 5656 bytes
SHA-256: 5b085f55921fa2b234729e565cde78af738c21489ace2bcc2cef635804ed1e9f
font_01_sfnt_off0000f110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF110 11148 bytes
SHA-256: fc343edbdbb7b41b0bc46f340291f8b19a7c62ccd0163c9ebcacb991bd2020e3

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