Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe56cfbc020c3082…

MALICIOUS

PDF

79.2 KB Created: 2021-02-23 06:52:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c5bfe1209948f89ad6aec2062ac0ef90 SHA-1: 7b9dcb5b4cc267b827a0445b2528b31da372bb09 SHA-256: fe56cfbc020c3082d90b6874e0627ae8c22c889b51cd41d49f85e938fc82ad84
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, which is a strong indicator of phishing or malware distribution. The ClamAV detection and ML classifier further support its malicious nature. The embedded URL likely serves as a lure to a phishing site or a download server for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=garmin+nuvi+255w+battery+ebay In PDF document text
    • http://antonioita.fun/3990527891r5fro.pdfIn PDF document text
    • https://cdn.sqhk.co/vujaderaz/n3jjlcL/48215098058.pdfIn PDF document text
    • http://tudovawo.22web.org/apental_calculator_fb_liker_app.pdfIn PDF document text
    • http://tryraisins.club/71351731910z7ood.pdfIn PDF document text
    • https://cdn.sqhk.co/xedasuzefer/y6e3hj7/paxigofilifixupe.pdfIn PDF document text
    • https://cdn.sqhk.co/guletema/VTjeoeI/slice_of_heaven_menu_cheddar.pdfIn PDF document text
    • http://imm-shoes2.club/6218144935547p35.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/ptnljdi/best_font_for_tattoo_numbers.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/BgjgjQO/sims_for_free_download_full_version.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lavofedelozus.rf.gd/dcfs_report_form_online.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/wokesujaturogedeb.pdfIn PDF document text
    • http://loluxemo.epizy.com/android_google_account_manager_5._0.pdfIn PDF document text
    • http://numifugok.rf.gd/excellent_academic_performance_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/herpes_simplex_infection_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/78530986894.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/52001875016.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/62854099305.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/bewafa_status_video_whatsapp.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/black_abs_plastic_sheet_hobby_lobby.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/85213589199.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/gofokinibupokemuv.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_off0000fa63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA63 5300 bytes
SHA-256: a3ff1c4f2b6cd9d40225065e53f8265362c1d2d840e2af94f4658e90754dfaee
font_01_sfnt_off00010c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C76 10316 bytes
SHA-256: 13a8a8842867b26d1d3ef6e4fde9e7faf3ace8cc5cc7b39935e58c5effa61675

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