Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d592f6746267d3c…

MALICIOUS

PDF

75.6 KB Created: 2021-02-17 01:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 847830e7c152f980dab7e2a90d4c51fc SHA-1: b40ca88614a36f1d03b4e65f51a12f7fa19eb0af SHA-256: 8d592f6746267d3ca41b1596c407a3ebb1af9a756f5693e69037658eea0e038f
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting it's used for phishing or to serve a malicious payload. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=compound%20interest%20questions%20and%20answers%20in%20hindi PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4479715/normal_5ff58ed950315.pdfIn PDF document text
    • http://findattime.com/84099928257duj60.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422372/normal_5ffe9955c683d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377113/normal_5fcbdcda14ec2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389570/normal_60249da532da3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453342/normal_5fdd69144f802.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420451/normal_602020b330f25.pdfIn PDF document text
    • http://kifokomuvaxof.iblogger.org/reporting_mediation_analysis_results.pdfIn PDF document text
    • http://taygerr.com/tegamaralulinidudemebk8s84.pdfIn PDF document text
    • http://prognoz-football.club/fishing_diary_mod_apk_2018v4kn6.pdfIn PDF document text
    • http://whitetwo.space/amcap_full_crackv2l8c.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/30673170820.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/dejazuvorira/93793929804.pdfIn PDF document text
    • http://disetorabagubed.epizy.com/decline_interview_letter_template.pdfIn PDF document text
    • http://sawezigulafufa.epizy.com/pukon.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_off0000ea97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA97 5292 bytes
SHA-256: 900453ac2c907d67f0802c9cc94058aea9bb320617e520230f3be1075d932d8b
font_01_sfnt_off0000fc72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC72 10796 bytes
SHA-256: 34211c0b6c71ec268e89f7e30482921be94e199b2e32fffa0fb663acf31584ed

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