Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6188db803189d05…

MALICIOUS

PDF

81.3 KB Created: 2021-04-16 04:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cd806fa6d0847cb946e3b97428b4d37a SHA-1: 0c5663f35b0b289401d543b90f76d541b7f9cbb6 SHA-256: d6188db803189d05b509f9f354e732ed7bd5661dee662dab9b6f6ec2811e9b48
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating an embedded external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the presence of an external URI in a PDF with a malicious verdict suggests it's designed to redirect users to a harmful 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://soxebez.ru/strik?utm_term=resumen+del+principito+por+capitulos+para+ni%25C3%25B1os PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4531523/normal_604a9d6268dbe.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/hbiiSBm/48827449407.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzaxube/9eBYNja/sniper_elite_4_zombie_mode.pdfIn PDF document text
    • https://cdn.sqhk.co/bamopilu/1gjgjia/turare.pdfIn PDF document text
    • https://cdn.sqhk.co/buwaxaxodi/KijhyZG/rechargeable_table_fan_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/73Qifso/25703342975.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481418/normal_5fd10eb1a7324.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463262/normal_5ffe9d128009f.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/jjbgfjj/nixuwemazuzoz.pdfIn PDF document text
    • https://cdn.sqhk.co/tememagitapo/0hghjOD/pepperfry_app_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368742/normal_5fdb1d88b9708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380522/normal_600f954d42b98.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/dLKd5hN/electrical_lighting_design_calculations.pdfIn PDF document text
    • https://cdn.sqhk.co/lesepivir/hcIAgjk/bosidorebagamoganibojomi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pitigutevonuge.rf.gd/96063795420.pdfIn PDF document text
    • http://rifimazagajide.epizy.com/is_dwg_viewer_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/futojuvila.pdfIn PDF document text
    • http://kukalofawofami.epizy.com/bwv_1067.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/winatudasizu.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_off0000fc6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6F 5436 bytes
SHA-256: c3fdac7b7d2700679b49cff6cc12f85c47b849a7f073e85c63cd763fc6493bf9
font_01_sfnt_off00010e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E94 12044 bytes
SHA-256: ac548421546cee38d2d58be8df08e8c8387c96fd46bbca83f28b2dd46e22319b

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