Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00f02541693613c…

MALICIOUS

PDF

67.6 KB Created: 2021-03-28 08:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 93ebb02ba7c991d731c2e0dbf903b8b5 SHA-1: 50d98e0aa652e19d3b75ef727fb8ee48217cc2ca SHA-256: d00f02541693613cdbe57b2617c29d44670c47f5ae569a368bf1cfc42d91e704
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, flagged as a "PDF_SEO_LINK_FARM", suggesting a malicious intent to redirect users to potentially harmful websites. The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as a "Pdf.Phishing.Trojan". The document body, though obfuscated, contains keywords related to PDF tables, likely used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/award?keyword=test+for+cations+and+anions+table+pdf PDF link annotation
    • https://demenuxukuxit.weebly.com/uploads/1/3/1/4/131438289/vupitivikiku.pdfIn PDF document text
    • https://cdn.sqhk.co/xadakede/jhchfit/dhoom_3_songs_download_pagalworld_320kbps.pdfIn PDF document text
    • http://nudistoff.club/descargar_gratis_biblia_reina_valera_1960_para_pc_windows_7icrrl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445325/normal_6040afc2a49c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479715/normal_601d941b72582.pdfIn PDF document text
    • http://ogranicbio.fun/xenowuxazozemiwotavevl8gj0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420766/normal_5ffc30807e0f8.pdfIn PDF document text
    • http://uscreditreport.info/learning_bayesian_networks_neapolitanjvpv8.pdfIn PDF document text
    • https://serudifatu.weebly.com/uploads/1/3/5/3/135324897/5691148.pdfIn PDF document text
    • http://trelon.fun/conley_injury_reportlkn5u.pdfIn PDF document text
    • http://cosmostil.top/wonder_book_report_examples7mn17.pdfIn PDF document text
    • https://cdn.sqhk.co/vusabutam/bUjhQXc/crossword_puzzle_solver_free_app.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/XjaQVGO/empire_four_kingdoms_online_game.pdfIn PDF document text
    • https://cdn.sqhk.co/zetoreli/f0nhcyv/racing_goggles_fox.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/mefonevimimix/10486913712.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/wepimuwizopiperezokamowe.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/bitlocker_recovery_password_viewer_tool.pdfIn PDF document text
    • https://51bf459c-6b46-41b0-863f-532cf8a77e0d.filesusr.com/ugd/2eedf1_e36975047de04c2ab4f1822219c104f1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/how_long_to_cook_sweet_potato_fries_on_stove.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/canada_visa_application_form_pakistan.pdfIn PDF document text
    • https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_434ad7f153e245a4995f076128a6e1c2.pdf?index=trueIn PDF document text
    • https://63aa7d51-6c54-48cc-ac87-b710a0da19c3.filesusr.com/ugd/c8d394_a91923a4a17249c288b91e586f056042.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB39 5236 bytes
SHA-256: 9f77b6301abe2ab1c40d4296e6e5daa3fbd0f8fcefd6a7e4bc39b48f123611cf
font_01_sfnt_off0000dd10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD10 10472 bytes
SHA-256: 699a793ae5c6c63a2f672a9b2c7c3a6a8c65d87bf5f19bc035fdbdccd7cd59cc

Open this report in the interactive analyzer, or submit your own file for analysis.