Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3545b09f8478b6c…

MALICIOUS

PDF

74.3 KB Created: 2021-03-18 20:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d843a4daaa61c591f2611d86b80aaa2a SHA-1: 989b34ea025e87109e5856df18ae7323d529c808 SHA-256: f3545b09f8478b6c7fbbc6a83306ffe57e54880067b95bc0ad111d83fcf8680f
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/wix?keyword=why+not+both+commercial PDF link annotation
    • http://reduslimitaly-ufficiale.website/e_bravo_app127l8.pdfIn PDF document text
    • https://cdn.sqhk.co/fusojafiza/idJ08he/hnefatafl_rules.pdfIn PDF document text
    • http://chambrehub.xyz/maxopazetinopekutawclqz7.pdfIn PDF document text
    • http://devlp.club/lunch_hero_weekmest9.pdfIn PDF document text
    • http://zathkatow.xyz/jeberokapekoniwizaluzokoeibxu.pdfIn PDF document text
    • http://bebolekuku.22web.org/charles_county_sheriff_crime_reports.pdfIn PDF document text
    • https://cdn.sqhk.co/nanijamu/jeja9Y8/pojukulofasogesupeti.pdfIn PDF document text
    • http://narezekopalezi.iblogger.org/how_to_shut_off_the_sprinkler_system.pdfIn PDF document text
    • https://cdn.sqhk.co/laxefotogulo/hf4jehV/bemilirivetosotuvirexud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c768987-225d-459c-befe-9a398430c163/how_to_reset_actiontec_router_to_factory_defaults.pdfIn PDF document text
    • http://lumuwejonalar.epizy.com/geological_record_unconformities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba639de2-431d-46ae-9034-2e4d20c4c7ee/46393382067.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/conditional_2_exercises_with_answers.pdfIn PDF document text
    • http://podekorutad.rf.gd/information_about_quaid_e_azam.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/how_to_change_omron_thermometer_from_f_to_c_th839s.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/8747472334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3ae2429-ef9c-4cd6-954a-e47b6c5b0fd6/gemenefowimonowozupik.pdfIn PDF document text
    • http://joxumokuri.epizy.com/gigatunewex.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/24292016553.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/all_bhajan_pagalworld._com.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/sibotekixaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9be5fdbe-3037-4ced-af8a-bd5399eddaa3/how_to_clean_bissell_powerforce_helix_filter.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_off0000e1e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E9 5116 bytes
SHA-256: 09eda398b8460d04efdfd85053e00ec87b5c6755597d17963c7e123681a5b1ce
font_01_sfnt_off0000f339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF339 12068 bytes
SHA-256: f094a1313f647ec08aa4381f514545c9d3b4ff847caa192f3cf8dc7f9df4efbc