Malicious PDF — malware analysis report

Static analysis result for SHA-256 d469e3561276952d…

MALICIOUS

PDF

72.8 KB Created: 2021-02-08 10:24:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3b4e3beaba3b5b72b232532c83927f32 SHA-1: e13639cc9548be2ac79ef6a0594cb624d3a52b2d SHA-256: d469e3561276952de427a9745d3ff947925ed494ffa6c77a0be3e1e9cfb3ca7a
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating an embedded external URI, which is identified as a phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL likely leads to a phishing page or a further stage of malware delivery.

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://jacksth.ru/aws?utm_term=leaf+coloring+worksheet PDF link annotation
    • http://teplotronic.ru/euro_truck_simulator_2_harita_modu6h8qh.pdfIn PDF document text
    • http://laulu-go.ru/lazapopaxazulabofepejopie6orn.pdfIn PDF document text
    • https://livubefelamujir.weebly.com/uploads/1/3/4/8/134899239/21a724b78.pdfIn PDF document text
    • https://kodepifaz.weebly.com/uploads/1/3/4/7/134705681/tazagigurebuwoxebus.pdfIn PDF document text
    • http://bajelow.iblogger.org/amandemen_pertama_uud_1945.pdfIn PDF document text
    • http://swiss-gear.store/bivakujokadelaxo9xnn9.pdfIn PDF document text
    • http://consequences.space/16171909059xntde.pdfIn PDF document text
    • https://waxogisuges.weebly.com/uploads/1/3/0/7/130776632/nazuzaxuves.pdfIn PDF document text
    • http://xukebovuw.22web.org/soniporizekomoxalu.pdfIn PDF document text
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/faxaxiwupuxeg.pdfIn PDF document text
    • http://letnesil.xyz/banana_runts_flavornn1n7.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/lopadivupudexa/luwusubitidajuzekune.pdfIn PDF document text
    • http://zutilokip.epizy.com/wifi_crack_software_for_android.pdfIn PDF document text
    • http://nisuzadusidu.epizy.com/aafaton_ke_parinde_ishaqzaade_song.pdfIn PDF document text
    • http://webekilijonelew.epizy.com/20366224669.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/django_template_example_github.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/three_reasons_why_school_uniforms_are_bad.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/gepoxujefetatepelezevoja.pdfIn PDF document text
    • http://xafonabikox.rf.gd/last_carnival_acoustic_cafe_piano_sheet_music.pdfIn PDF document text
    • http://tosopipates.epizy.com/pneumonia_bacteriana_em_caes.pdfIn PDF document text
    • http://tugojan.rf.gd/corrugated_sheet_roofing_materials.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/best_free_spreadsheet_for_windows_10.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_off0000df19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF19 5240 bytes
SHA-256: aef8658a07f7358ee6abfccd07924f4522ea873ba7fdc3c23d43a13d190a97d3
font_01_sfnt_off0000f105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF105 10744 bytes
SHA-256: b7e4aac9c076de5a62cfe0f06bb516bfdd1c055c28d523a113b5ff6849fb2ebe

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