Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5b1e757ebb3b0b…

MALICIOUS

PDF

89.7 KB Created: 2021-02-13 02:04:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: b84a4b4d013a31222753f59d68f1a87a SHA-1: f5cc0a1ab2ab46c34b58d5609374872d30a6083f SHA-256: ee5b1e757ebb3b0bb15a2aa684e9e23da2517db1d10595395aa5e629da9f4fe2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when visited, likely leads to a phishing or malware download site. The ClamAV detection and ML classifier strongly indicate malicious intent, and the embedded URL is the primary indicator of compromise. No scripts were extracted, but the PDF structure itself facilitated the delivery of the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=pokemon+platinum+underground+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479906/normal_602420d5002dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392862/normal_5fffb32aa7d49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492897/normal_5fe432a6e4b2c.pdfIn PDF document text
    • http://nososunovurosag.iblogger.org/sisejixibep.pdfIn PDF document text
    • http://jidugisukeranav.iblogger.org/java_64_bit_latest_version_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457592/normal_5fd5f62580ee4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vedulojut.epizy.com/new_android_mobiles_under_10000.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/pro_evolution_soccer_2020_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/android_emulator_for_ubuntu_18._10.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/82654746206.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/pudefufegarewilixavalim.pdfIn PDF document text
    • http://juxudawalugevop.epizy.com/boxevekaxanokexabanaro.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/pituzipigubawabetugof.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/15898779508.pdfIn PDF document text
    • http://keberugut.epizy.com/ceiba_pentandra.pdfIn PDF document text
    • http://pexedidal.rf.gd/lancaster_city_council_planning_application_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/atlas_of_anatomy_anne_gilroy.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/56212547818.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/building_construction_process.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/counter_strike_1._6_server_files.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001168c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1168C 5048 bytes
SHA-256: 7edd8166db5c331a34fa15d821218f56f01064632f6a24962a97b04edcacc5d3
font_01_sfnt_off00012797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12797 10328 bytes
SHA-256: 9f8b08008a0d2b54e71ca0a26f592bdacf6562d6d471cebe56f78f77006c6003
font_02_sfnt_off00014ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AE9 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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