Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ccc0359686e92dd…

MALICIOUS

PDF

74.8 KB Created: 2021-02-19 15:31:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: eca8f4452ed7de611738691d1e8966ef SHA-1: 913fb75a6e30f65535a5314e93f9a256c371daf4 SHA-256: 2ccc0359686e92dd5b3255250cb823cac77325a54c06b79685242389542cabf6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/strik?utm_term=viktor+frankl+man%2527s+search+for+meaning+synopsis'. This indicates the document is designed to lure users to a potentially malicious website. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

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
  • 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://yafferge.ru/strik?utm_term=viktor+frankl+man%2527s+search+for+meaning+synopsis In PDF document text
    • http://lnstagram-verifedbadge.com/academic_word_list_coxhead_2020vmce2.pdfIn PDF document text
    • http://walojafaj.iblogger.org/get_b_form_nadra_pakistan.pdfIn PDF document text
    • http://sufepivu.22web.org/tamil_gana_amma_video_songs.pdfIn PDF document text
    • http://ewop.space/lyft_driver_scamse6zuu.pdfIn PDF document text
    • http://aazzzry.space/122126661268paby.pdfIn PDF document text
    • http://temppicture.xyz/vba_excel_2020omckk.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/bezegoluzose/62396600497.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/68999078371.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/4x8_acrylic_sheets_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/78465303297.pdfIn PDF document text
    • http://nasewuji.epizy.com/tezisuporubikapaxibe.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/grepolis_report_converter_revolution_tools_firefox.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/bukujo.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_off0000e833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE833 5592 bytes
SHA-256: 2b0a783869603bf22570e39e8457fab8b1b1a0229c329ec786f91bac717f1882
font_01_sfnt_off0000fb2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2B 10244 bytes
SHA-256: 22be55ac403d119915ea474ae083b6bca63f577a861b34f9ceb70c16f0c45c7c