Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4df0493e3132fab…

MALICIOUS

PDF

72.0 KB Created: 2021-03-23 18:57:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2656d5f121b85a555f45b2f8e6f4b390 SHA-1: 8280ac1c4dec569dd38cdb21edf8a332a3869d19 SHA-256: e4df0493e3132fab524dfc29a684011ba6ab62b928fefa1e8d3a1f1637c42d61
134 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains a high-confidence heuristic indicating it's an image lure linking to an SEO redirector, specifically `https://botokaw.ru/award?keyword=attach+dsc+to+pdf+online`. This URL is likely part of a phishing campaign aiming to trick users into downloading malicious content or providing sensitive information. No scripts were extracted, but the overall structure and heuristics point to a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9662

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://botokaw.ru/award?keyword=attach+dsc+to+pdf+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405895/normal_601dc5ff3ea1f.pdfIn PDF document text
    • https://cdn.sqhk.co/jizuxadif/tYjbrf6/mineral_wells_wv.pdfIn PDF document text
    • https://cdn.sqhk.co/sewuvavimebi/fibje24/ziwedutaluli.pdfIn PDF document text
    • https://cdn.sqhk.co/loberutebe/jgihhCu/1814271899.pdfIn PDF document text
    • http://hellesypakk.online/90907377143qf5gp.pdfIn PDF document text
    • http://usmileofficial.site/64115575651a5ud7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450724/normal_60216b244387a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491436/normal_600e0757120a5.pdfIn PDF document text
    • https://cdn.sqhk.co/supetudoti/0Ljcifq/85294753010.pdfIn PDF document text
    • https://cdn.sqhk.co/bosesegivu/lauhatA/anthem_of_heroes_modern_combat.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/iPhahhC/classifica_musica_italiana_maggio_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/mobobelelu/6Kfjjin/tigosebamag.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/ijejaIY/kagek.pdfIn PDF document text
    • https://cdn.sqhk.co/jasolizilaf/jvibthj/79879904921.pdfIn PDF document text
    • https://cdn.sqhk.co/wugolekufo/dnggqjK/wisiguwipami.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/921716290538r9s5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417226/normal_5fec22e074b1a.pdfIn PDF document text
    • https://cdn.sqhk.co/padasagam/Kgdjjii/5377320550.pdfIn PDF document text
    • https://cdn.sqhk.co/miwavilusaji/5msigjh/68872881415.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E0 5136 bytes
SHA-256: 12d54eb231ae10d3612743c3e6c3e608b6fe2034034b68e4da799f541b5e7439