Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c2d22c07e9e1c7…

MALICIOUS

PDF

76.2 KB Created: 2021-05-10 03:36:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7c042a1641e21db1d345b1258db3e5e SHA-1: 97b698cd4c7abb2d6d6d8c61ca85b0f0dd7b777f SHA-256: 15c2d22c07e9e1c7063903ca222f49cd8479dfc07c0ff32e62df4f86e8af4999
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URLs suggest a phishing or malware distribution attempt, likely disguised as a benign document to trick the user into downloading a secondary payload. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/i98pk2dgjbn6bf48mqq1l27j47/lidebagezoberi.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608529dc8440a---64825346944.pdf
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/b74a881771a7b6716938c08f5198cfde/lagezaboxexobobikalif.pdf
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/9c57b99c8c3fa47dd3e65db799e4f31d/64764107099.pdf
    • http://adveotec.com/img/file/85628340613.pdf
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944d4143484---58517158338.pdf
    • https://audit-advisers.com/userfiles/file/fumiv.pdf
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/r1ckb3ij5369rn563auggcpnf4/39580011983.pdf
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce0ea20367---23450679459.pdf
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866b6673987---simokanexebegeda.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/0210be66fb31e7a8a177e52e28017168/xisaluw.pdf
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa89692642---pidigozu.pdf
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/lacldf8nne3uakmkrct9518pkp/kivexererikuwefixipu.pdf
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/inh33j3vfegvlq88e38166ri3h/bubinar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=gmod+android+playermodel
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e884.bin
f53dedddd51cf5ff80d00bbcbbfcc88c92ffd4d38e893748195f37ec19b2c805
pdf-font-stream PDF embedded font (sfnt) at offset 0xE884 5060 bytes
font_01_sfnt_off0000f9ab.bin
8c191ffabc21021ef3da6171650a96397749eaac52b7c4feee4a2ab0f5ce801e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AB 12548 bytes