Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea07c0dcf7c2bc2…

MALICIOUS

PDF

62.3 KB Created: 2021-03-25 13:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d31b5cf952d44e36b9d539c00a720301 SHA-1: 37a8b64a04fccb60aed40c7c33ad6068d2e51c05 SHA-256: 0ea07c0dcf7c2bc27b17e3030be564405f63811fb99a11ffcf54b145e807e9b5
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9735

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
  • 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
  • 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://nipisod.ru/award?keyword=manipal+clinical+medicine+book+pdf PDF link annotation
    • https://fogurasetaj.weebly.com/uploads/1/3/5/9/135961985/xozadujarega.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/fjgDiah/yellow_wallpaper_iphone_6.pdfIn PDF document text
    • https://rezisepadas.weebly.com/uploads/1/3/4/2/134235668/3bd7830cfc5.pdfIn PDF document text
    • https://cdn.sqhk.co/sururezog/gIhbkPQ/go_kart_racing_jackets_suppliers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476924/normal_5fcd17d62cd8f.pdfIn PDF document text
    • http://skout.tech/gonosizusowubuwfnou.pdfIn PDF document text
    • https://piwifagipob.weebly.com/uploads/1/3/1/3/131379899/f756462e1e5a.pdfIn PDF document text
    • http://bifakibebus.iblogger.org/automobile_engineering_kirpal_singh.pdfIn PDF document text
    • https://waretopaze.weebly.com/uploads/1/3/4/5/134529701/nimip.pdfIn PDF document text
    • https://cdn.sqhk.co/zexoribuj/4ghN9XT/w3schools_php_date_format.pdfIn PDF document text
    • https://sozezitevi.weebly.com/uploads/1/3/4/6/134639304/3662140.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376380/normal_5feb60c071bfb.pdfIn PDF document text
    • http://vinakubos.22web.org/54796576802.pdfIn PDF document text
    • http://trysucre.pro/kunujijizewidowavajexyoa.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/natewared/gta_5_online_pacific_standard_heist_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/indian_navy_2019_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/vekuzukisizinivimafuxoge.pdfIn PDF document text
    • http://webujexujafobe.rf.gd/aprender_a_tocar_guitarra_muy_completo_gratis.pdfIn 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_off0000ca7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7A 5236 bytes
SHA-256: a06ec1719e23ff8930647eafc03e35b16620f2488277e9fdcefeebcb93f9e1cc
font_01_sfnt_off0000dc4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4B 10084 bytes
SHA-256: fa43291d9f2ce9a5aac0d6b94f20b5413852a049332f54ad65c8aa939feb2548

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