Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb22bc4aca997aa…

MALICIOUS

PDF

99.4 KB Created: 2020-11-10 17:57:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0aaea7f3f1b21f2b9ddfbdd214e5ec46 SHA-1: bbea89f1f2d7d7bb14ede8c31856d6ac79eb1d8a SHA-256: 5eb22bc4aca997aada460f1d44fb8e1ca797f706d6d8e2e6da4f6d120ba386ab
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?keyword=waternoose+voice+actor In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385216/normal_5fa2416b87e10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f931c8a4dcd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_5f89e0c57ee0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404966/normal_5f9890295fdbb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/3206798072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24b848c2-7f33-4e30-b24a-bdc68dd43a5d/35186221035.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4f5ea96-5410-49e2-8fcb-9907cf1f3188/nutelij.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/the_chocolate_touch_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/buy_here_pay_here_dealerships_near_albany_ny.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/fejorima.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/essentials_of_teaching_adapted_physical_education.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/pomobumoberuv.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/75106769753.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/22_cal_gatling_gun_plans.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_off000148f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148F0 4832 bytes
SHA-256: ed729be3457d000bf147c0fb8b3050dcc44a2c8fde614ba4b1598d2cae60e141
font_01_sfnt_off0001597f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1597F 11708 bytes
SHA-256: 0e6ab53ecd6ad4e8de968d0c518a8aadcd1641b394e336415485d06a740307c0

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