Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad3937580f0a710…

MALICIOUS

PDF

79.4 KB Created: 2021-05-18 09:22:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b95fc9450cc2c75dd573b040cba30379 SHA-1: e9c238af99385d691256d7de12bc37671d5e809a SHA-256: 8ad3937580f0a710ebf41aa45119e78c1c9a703c2c12a5be5cb39d159e41508d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to 'Zuma deluxe free download', suggesting a lure to trick users into clicking the malicious link. The ClamAV detection and ML classifier further support its malicious nature.

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=zuma+deluxe+free+download+full+version+no+time+limit+for+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427821/normal_6043becc859e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459341/normal_600ca7c24c070.pdfIn PDF document text
    • http://bakimebisuxoj.iblogger.org/riesgos_biologicos_laborales.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/jenisozazewubo/allison_transmission_fault_code_spn_2003_fmi_31.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/29496549379.pdfIn PDF document text
    • http://gizenelik.rf.gd/aetna_better_health_of_kansas_reconsideration_form.pdfIn PDF document text
    • http://gofudawaropuz.epizy.com/nicomachean_ethics_terence_irwin.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/addition_and_subtraction_fraction_worksheet_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/97001632717.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/bozapi.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/bootstrap_template_free_basic.pdfIn PDF document text
    • http://dibadedogiw.epizy.com/genetic_engineering_definition.pdfIn PDF document text
    • http://gubodasitonobu.epizy.com/contact_form_7_material_design_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/35592843146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1edd5d8-1a73-4ed3-ad29-682412b695a9/aprilaire_wifi_thermostat_app.pdfIn PDF document text
    • http://tigofed.rf.gd/51579179127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ba73663-931e-4782-81ea-2071a64748e2/dujedokamovo.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/honda_dream_yuga_110_on_road_price_in_kolkata.pdfIn PDF document text
    • http://monifixo.rf.gd/chemical_composition_of_biomass.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_off0000f73a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73A 5480 bytes
SHA-256: ebb198f9e84c4e946a6547fba862c58964921860c4354021a3f6b300737bbe9b
font_01_sfnt_off000109e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E7 10984 bytes
SHA-256: c53723eae22ae9fa2199f261ccd0cac6578167c4c2e5bdc7fe2df77b43834786

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