Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7574d57ae3053c6…

MALICIOUS

PDF

77.2 KB Created: 2021-02-25 18:00:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8faecce4441ad1c52f3a7500bebfa2fc SHA-1: 9368c4e72fa8a5674a1297b7bdcf88504931d4a7 SHA-256: f7574d57ae3053c6a7f868f2465375bb757e67adc1a44d2271bc00c7c2586412
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a clipboard-command (paste-and-run) lure. 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 0.9998

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://jacksth.ru/123?utm_term=is+adobe+premiere+pro+good+for+beginners PDF link annotation
    • https://cdn.sqhk.co/nukunudakiju/OR38Fha/transparent_clock_weather_forecast_radar.pdfIn PDF document text
    • https://cdn.sqhk.co/xekutenupi/ShbF9ig/74903376607.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxubefe/fwQijgj/73678422133.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/eEjgihg/xatut.pdfIn PDF document text
    • https://cdn.sqhk.co/wejupexuput/PhgiaMh/10492507880.pdfIn PDF document text
    • https://cdn.sqhk.co/feletitami/9Rhhigg/master_emu_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/kc5wKhf/govazixafezixesidomukiku.pdfIn PDF document text
    • https://cdn.sqhk.co/rexixugepir/qjehijb/sezaxewijamekivarufer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kewugozosefo.epizy.com/tatalaksana_meningitis_tb.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/auditing_assurance_standards_icai.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/96548571966.pdfIn PDF document text
    • http://faperolakaf.rf.gd/28721248600.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/addition_of_dissimilar_fractions_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/52321873719.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/94082032932.pdfIn PDF document text
    • http://fidotetunuxezi.epizy.com/71219715235.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_off0000eea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA5 5404 bytes
SHA-256: 2f385b7faffc4976e295ae34e8b66bb820f34a9b136496e1d9b3535a1deba6cf
font_01_sfnt_off000100ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EF 10984 bytes
SHA-256: 521dfc7e33301f46f7988f5f2a49fa5a30b137651a5d634d4edaec8811202e38