Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aba41204b779ec2…

MALICIOUS

PDF

63.6 KB Created: 2021-01-28 20:36:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 251ff25676462b4ed6473e2502ebe61d SHA-1: 2b7de4b0b96e7db6a7326b96487be887fc465c69 SHA-256: 4aba41204b779ec2e7eec276be5cf5235e96fe1f7856ef25515def799e4320d0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/aws?utm_term=backyard+wrestling+game PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470678/normal_5fdb0d972e5bd.pdfIn PDF document text
    • https://xaxarudo.weebly.com/uploads/1/3/0/7/130740130/tuzukuzuxezejowe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379602/normal_5fdd9aed0a958.pdfIn PDF document text
    • http://musc-media.xyz/cms_telemedicine_versus_telehealthc1bf9.pdfIn PDF document text
    • https://vufosaxirit.weebly.com/uploads/1/3/4/0/134018891/nibajar.pdfIn PDF document text
    • http://sberbank.services/cambridge_igcse_chemistry_workbook_answers_third_editiongww6c.pdfIn PDF document text
    • https://ximabetewu.weebly.com/uploads/1/3/1/3/131384229/2211240.pdfIn PDF document text
    • https://nojasiputijaze.weebly.com/uploads/1/3/4/8/134869787/9fcee6679.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420600/normal_5ff444ae6347d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426080/normal_5fd2ce18e6c46.pdfIn PDF document text
    • https://bopilopuneliniw.weebly.com/uploads/1/3/5/3/135304065/8372891.pdfIn PDF document text
    • http://1xbet-sportstavki.fun/peguweparwiy3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kirigawegugava.epizy.com/posthuman_ecologies.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/kavejorituwobeta.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/87570176352.pdfIn PDF document text
    • http://suxanovovogemi.rf.gd/certificate_of_origin_form_e_sample.pdfIn PDF document text
    • http://xumugipetoje.epizy.com/fazenofebererobegekikib.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/14814826527.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_off0000bcb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCB4 5564 bytes
SHA-256: bfed9c73a31f1097ea6951a6774f019ba542e8a6c694f6a34c6158dbe42a2f83
font_01_sfnt_off0000cfb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB5 9976 bytes
SHA-256: ba3ced9d01fdb99e8a1e89c15e34eb36657487291a3d166b3746eadd9a5e350a