Malicious PDF — malware analysis report

Static analysis result for SHA-256 79278a3547fd923d…

MALICIOUS

PDF

67.1 KB Created: 2021-02-15 07:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 21c842f43b83b1067ece144466985645 SHA-1: 97393744207a500d337cfbd522c2cd818681fd71 SHA-256: 79278a3547fd923d17df097efe978dd583e0a43bb70d2012a8da110221323def
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://seumenha.ru/wix?keyword=csrf+verification+failed+request+aborted PDF link annotation
    • http://citrus-fruit.space/zudutimagomezokujejezadbbele.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374696/normal_5fcb8dd661e0f.pdfIn PDF document text
    • http://namunogetivij.iblogger.org/38776771137.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527859/normal_5ffa4f9b83317.pdfIn PDF document text
    • https://pikoxujedogusu.weebly.com/uploads/1/3/4/6/134665618/61060d7bef7d4c4.pdfIn PDF document text
    • https://fisenekapiwu.weebly.com/uploads/1/3/1/4/131437930/9349987.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414689/normal_5fccb385e6431.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bolapapuziku.epizy.com/am_coming_home_mp4.pdfIn PDF document text
    • http://kogopixipinal.epizy.com/35449929142.pdfIn PDF document text
    • http://delozaroj.epizy.com/fopoverepanugoraxig.pdfIn PDF document text
    • http://gofudawaropuz.epizy.com/xafuz.pdfIn PDF document text
    • http://dipuvomefig.epizy.com/certificado_medico_de_salud_formato_ecuador.pdfIn PDF document text
    • http://wabelat.epizy.com/34364487718.pdfIn PDF document text
    • http://wilisen.rf.gd/fire_emblem_heroes_stats_spreadsheet.pdfIn PDF document text
    • http://ratesedefavure.epizy.com/damero.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_off0000c4bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4BC 5244 bytes
SHA-256: b4e35065142715d15ce5e498a3aafe0353441f28c2831d9bf3558f5e2244b15c
font_01_sfnt_off0000d69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69A 11916 bytes
SHA-256: 653b355b3280869f6caabddd184998afd64a3657bcb4ea6030337be3a7da479c