Malicious PDF — malware analysis report

Static analysis result for SHA-256 6276f8f4d093246a…

MALICIOUS

PDF

342.6 KB Created: 2021-05-07 06:34:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c1dd9fd690751d5f96a6a5a4754a39c0 SHA-1: 2e46f84ff593b4b4afca74f671d91c9ffe8edc18 SHA-256: 6276f8f4d093246a2ce251dc5888d5f9d3c03b72861546000b1f655c14b0b44b
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URL and heuristics indicate it is designed to trick users into copying and pasting content into a command-line interface, likely to execute a secondary payload. The ML classifier and ClamAV detection strongly suggest malicious intent, pointing towards a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9858

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/strik?utm_term=4+pics+1+word+level+2148+answer PDF link annotation
    • http://ramosek.iblogger.org/bullous_pemphigoid_treatment_guidelines.pdfIn PDF document text
    • http://otomail.business/autodesk_2013_32_bit_freeeuypi.pdfIn PDF document text
    • https://cdn.sqhk.co/rivojotewez/Ehaxsjb/lopowazalajororidosibodir.pdfIn PDF document text
    • https://cdn.sqhk.co/surudije/0zgchei/fizoxobimesiwon.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/hqKjcUx/33477092376.pdfIn PDF document text
    • http://wide-take.top/hillsborough_county_school_bell_schedule_2020-21jmtu9.pdfIn PDF document text
    • http://axecheat9.xyz/57399141891mtttb.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/3hojgja/puluwipetudukenebagerinu.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/tikoweravisixu/animal_movement_worksheet_grade_5.pdfIn PDF document text
    • http://pevudavef.rf.gd/88147419411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b441b5f4-5b02-491b-bebe-0fe0808b5910/33207816970.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/longest_range_baofeng.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/robin_hood_2018_cast_russell_crowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e724cdd-26c7-4005-98ea-592f5810a114/gukozamuwixikiz.pdfIn PDF document text
    • http://visowad.epizy.com/lotusebimejeluna.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_off00050d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50D2F 5592 bytes
SHA-256: 70f6985359e80b0858c0e4d5fc9faad55ad3dfd09227037015559760883ccae7
font_01_sfnt_off0005205f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5205F 12756 bytes
SHA-256: f9317e3d25b4ada9bcefca9dea202afadcb7c8c0d210b8e1baf61cc94d14ced0

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