Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e79d16fb919b83e…

MALICIOUS

PDF

82.7 KB Created: 2021-02-17 01:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6b19debd31775d0e8d73bf6fe2e13ecf SHA-1: 312d2abe6d48654a47362160ff32723dbede101e SHA-256: 3e79d16fb919b83e1a6278fa4f1b7c40f9fa061331907c2566aa0b23916a830b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=how+many+calories+in+one+dunkin+munchkin PDF link annotation
    • https://cdn.sqhk.co/mejabutumu/365YQr1/nusudunopezuwekejuxinuma.pdfIn PDF document text
    • http://zobebukore.22web.org/how_to_connect_dell_monitor_to_macbook_pro_2018.pdfIn PDF document text
    • http://banepudota.iblogger.org/iphone_sim_activation_lock_bypass_tool.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/habSjf1/vokon.pdfIn PDF document text
    • https://cdn.sqhk.co/livatunozasu/v4hicjc/zixusatuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/hhjichg/wuvudilajulasux.pdfIn PDF document text
    • http://bezigex.iblogger.org/benzoato_de_sodio_alimentos.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/W5CUtsm/free_music_ringtones_songs_download.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/gavapozalilup/13992275095.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/free_whatsapp_for_iphone_7_plus.pdfIn PDF document text
    • http://sawujasasit.epizy.com/sepse_neonatal_2017.pdfIn PDF document text
    • http://gijuvove.epizy.com/chevy_volt_2018_performance.pdfIn PDF document text
    • http://tumirukilifu.rf.gd/rikimikavulanilos.pdfIn PDF document text
    • http://norenuwidubeg.rf.gd/78922105645.pdfIn PDF document text
    • http://rewezaxow.epizy.com/autodesk_3ds_max_2011.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_off00010351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10351 5396 bytes
SHA-256: ead89a16a54f935c4c0862cfb347377064d3a180d610a0435e16310f7baba2dd
font_01_sfnt_off0001158d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158D 11848 bytes
SHA-256: 6a7429e68196c536390c69439f58af82cd59a8cd80306dbdbd355bc9d4fb9d5b