Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c55b4ba5f40d4b5…

MALICIOUS

PDF

75.0 KB Created: 2021-02-28 13:23:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ded55bd4f18a069d157f1aa13defbdd5 SHA-1: a5ccd063076c49aedbb04c7f9014e0f55df3d55f SHA-256: 6c55b4ba5f40d4b5aa09803b6a974e5632c8193714bc45115258b162c8fe18c0
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI pointing to a suspicious domain, identified as malicious by ML classifiers and ClamAV. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Blue moon tavern everett wa'. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=blue+moon+tavern+everett+wa PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392462/normal_5fff9887a151f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379048/normal_5fd047480b122.pdfIn PDF document text
    • http://miworusak.iblogger.org/2009_hyundai_sonata_maintenance_schedule.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426819/normal_5ffcaa72333d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415081/normal_5fd6127c88374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384307/normal_6031ed9499be8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374185/normal_602da1b3a53c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423429/normal_5fe4efb747914.pdfIn PDF document text
    • http://mukogojusilu.iblogger.org/kafiwitoboxarigibadoxada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428033/normal_603b775c6a7fc.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/dell_1320c_black_ink_cartridge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://segigeserife.epizy.com/76773724213.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/report_card_comments_for_grade_2_science.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/rsos_12_admission_form.pdfIn PDF document text
    • http://vibupozikijebi.rf.gd/uc_browser_mini_old_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/bootstrap_admin_template_horizontal_menu.pdfIn PDF document text
    • http://duzoxugulof.rf.gd/12301632832.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/74115982430.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/how_to_answer_tell_me_about_yourself_in_interview_sample.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_off0000e879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE879 4856 bytes
SHA-256: 1acd99acce5b0e3b315f083e9e9bdf5ed87709a7c939cc24584b2f1e8844b7c8
font_01_sfnt_off0000f8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F3 11256 bytes
SHA-256: 3700c37dc2a7d43b5c083397bb6d6e2690791be429236e5e7c5e740f93abf279

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