Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc3f6dd17cee7a0…

MALICIOUS

PDF

81.1 KB Created: 2021-04-08 21:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 87c82a789dfb85eb343b8a647339277e SHA-1: c8196b7e0a88a83f08ba83d56f57d98e27e55d9e SHA-256: 2fc3f6dd17cee7a014c6a7665059ad6e201e3634ced160af19931a36ef2e080e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a book summary, aligning with social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/strik?utm_term=city+of+thieves+david+benioff+summary PDF link annotation
    • http://minosijasif.mypressonline.com/19345732913.pdfIn PDF document text
    • http://sikalaporaka.22web.org/the_dragon_prince_s01e01_watch_online.pdfIn PDF document text
    • http://dejamorije.scienceontheweb.net/39158424438.pdfIn PDF document text
    • http://rajedat.iblogger.org/how_much_power_does_the_hx_stomp_need.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
    • https://s3.amazonaws.com/gewuwasi/zimsec_a_level_computer_science_project_guide.pdfIn PDF document text
    • http://varirojemixu.myartsonline.com/22161313491.pdfIn PDF document text
    • https://02408c19-b9f6-4996-a596-1d5b7e46c8d3.filesusr.com/ugd/c83fdb_7f44bb5bcaca43ef9c0e55cce7fcea2c.pdf?index=trueIn PDF document text
    • http://vomewudige.atwebpages.com/auditoria_fiscal_libro.pdfIn PDF document text
    • http://timojodabemisux.myartsonline.com/formasi_cpns_bandung_barat.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/how_to_do_cognitive_behavioral_therapy_yourself.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a0f9575-3a44-4cd4-88d7-133dd901ec76/merumiwe.pdfIn PDF document text
    • http://luvepel.myartsonline.com/bbq_company_de_downloads_grillseminar_basic.pdfIn PDF document text
    • http://jajogagek.atwebpages.com/27673319809.pdfIn PDF document text
    • http://sovavovekemaz.epizy.com/why_isnt_my_samsung_washer_turning_on.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/dd_phb_3.5.pdfIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_5263ee3b734d40228b9eb89a8fc7d2db.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sojaxub/jinja_template_if_true.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/544a4842-c722-4bc9-a8b1-83fea9d54f72/39374239653.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/23910798960.pdfIn PDF document text
    • https://46c19374-600d-43be-a5f2-d8bf07c6fddf.filesusr.com/ugd/cc94a4_1efcf427cd58475f88950d1183a68eec.pdf?index=trueIn PDF document text
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_b2803d31b5e545ecb83e87ff667cf430.pdf?index=trueIn 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_off0000ef2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2F 5320 bytes
SHA-256: c426906b98bd8274d609489033f478f7e06a74499c61f99271dc45cff70defc5
font_01_sfnt_off00010124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10124 11124 bytes
SHA-256: 605fe954782dfe50ba80847459c45a9105f9e376c0f58a23831602253fd7bd0e
font_02_sfnt_off00012740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12740 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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