Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ac000b39a30423f…

MALICIOUS

PDF

69.1 KB Created: 2021-03-12 05:48:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e091d37309d06628adafeda77f363948 SHA-1: 53e4d817822d9b16ff3aa0b11dbc2c6877462e62 SHA-256: 4ac000b39a30423fe650250b43e930c94147abcbdca8787a9c0fceabb9e7effa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://mezovuduw.ru/wix?keyword=book+of+mormon+student+manual PDF link annotation
    • https://cdn.sqhk.co/jurugaguvedu/gCjc8jg/tufee_school_and_coaching_management_apps.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/hjEc0jg/flower_mandala_coloring_pages_online.pdfIn PDF document text
    • https://cdn.sqhk.co/waximanodif/sic0Rgf/rolling_stones_logo_outline.pdfIn PDF document text
    • https://woxisuxifajise.weebly.com/uploads/1/3/5/4/135400236/5d5f045b99cb.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/ggiaicw/vusabumi.pdfIn PDF document text
    • https://rovisudaguxu.weebly.com/uploads/1/3/1/4/131438800/xaguv-rawuv-wobodusenon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xasobanezifo.rf.gd/hungry_shark_evolution_apk_hack_version.pdfIn PDF document text
    • https://676a7a22-5bec-432e-92e0-9d4a0a27851c.filesusr.com/ugd/a1fb72_0e69723f2559471387ab7324fb8c35bd.pdf?index=trueIn PDF document text
    • https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_c6230b1b80d146a8a83a8a14ec3e949b.pdf?index=trueIn PDF document text
    • https://4c69d07c-928c-405f-a1ab-6436392658c4.filesusr.com/ugd/4c264d_956e9d13b17c4d0eac390314a2aea98e.pdf?index=trueIn PDF document text
    • http://gevewodex.epizy.com/checkpoint_english_textbook_1_answers.pdfIn PDF document text
    • https://59cf682b-6680-4a08-8b8d-0472bab64ef7.filesusr.com/ugd/d7d6cd_806e30282c384210982da613ab33bd76.pdf?index=trueIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_988bee6f04624837a30ceb92b9fa141a.pdf?index=trueIn PDF document text
    • http://webenawawejoped.rf.gd/xavinake.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/barcelona_team_sheet_2019.pdfIn PDF document text
    • http://nutogexutal.rf.gd/envato_ae_templates_free.pdfIn PDF document text
    • https://0f285ee0-1b14-49a2-8a3e-060a2db94812.filesusr.com/ugd/4bf67f_e3b52ec4839342dfa69725eda02a6733.pdf?index=trueIn PDF document text
    • http://sepimenixinu.epizy.com/59606119214.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_off0000d2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B5 5168 bytes
SHA-256: 915fc43e502b98643e2e740b9eb16afb889120aec5be2eb5f51173a443d3bafa
font_01_sfnt_off0000e434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE434 10392 bytes
SHA-256: fe77dc110db16ba7e6fd51c5ab2cfdfb05d0cbda43e663ff38005d474418bcf5

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