Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7ced957559ca0e…

MALICIOUS

PDF

80.0 KB Created: 2021-03-10 12:02:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b39a07ec7f31c90230459eb6bed18c24 SHA-1: d03e6ffa7dd8bd965986ca07e78d500f8165daa1 SHA-256: 4a7ced957559ca0ebccafeeaa1e71a882badb982fbf3578ad646019efdf76c17
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 0.9992

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://seumenha.ru/wix?keyword=spongebob+dihybrid+crosses+answer+key PDF link annotation
    • https://cdn.sqhk.co/dofofigeniso/0eighjc/bubble_shooter_game_download_free_for_mobile.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/sakodite.pdfIn PDF document text
    • https://cdn.sqhk.co/fetumamuv/hbqgcNJ/kusuvodopolaropus.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/fig1hhC/vofalesu.pdfIn PDF document text
    • http://diluzadumavotux.getenjoyment.net/roman_numeral_worksheets_year_4.pdfIn PDF document text
    • http://fosireditoj.mygamesonline.org/44485196603.pdfIn PDF document text
    • http://votewimuvuxa.iblogger.org/29282642724.pdfIn PDF document text
    • https://cdn.sqhk.co/golizojuw/hbijihc/40914646673.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bavotuvezomevi.myartsonline.com/merenawug.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/90932361061.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/patronage_politics.pdfIn PDF document text
    • http://ganusigesu.rf.gd/vufudagosava.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/lofuzotadoj.pdfIn PDF document text
    • http://bagirisuteladog.rf.gd/babenijoberatimapakev.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/pentaho_report_designer_jndi.pdfIn PDF document text
    • http://kapifotezuxevup.epizy.com/whats_the_best_golf_gps_app_for_apple_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/22543217694.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/extractable_and_leachable_study_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/3620230352.pdfIn PDF document text
    • http://xutakubu.epizy.com/16736951839.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/alfred_basic_piano_book_level_1.pdfIn PDF document text
    • http://fefomopopokelo.epizy.com/48398864290.pdfIn PDF document text
    • http://bimuvugibane.rf.gd/platform_synonym_software.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_off0000fb99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB99 5804 bytes
SHA-256: 8a93d0a53292b27512b8a6b5b41a5b7ff7ee40ec898c884b33ac2356e914754f
font_01_sfnt_off00010f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6A 10116 bytes
SHA-256: 2f3d947ed7bbf63abb733b7488d2c8fc1101cbe734e437637a1d68a6d76282d0

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