Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee4337b9064dba3…

MALICIOUS

PDF

72.3 KB Created: 2021-05-16 22:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6971ae45fa7c988734a22bd43b404cbe SHA-1: 075fbd1d7004336dd8c5f535bb06c6d1b158424b SHA-256: 2ee4337b9064dba347163b0b7972a4d575cd2476d360c767d278983fe29ab4c7
154 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress upload storage, suggesting a link farm designed to distribute malware or phish users. The document body, though heavily obfuscated, contains references to "marvel movies tamil dubbed" and the authoring application, likely a lure to attract victims.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7901

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608216cd23c26---kovetekowezuzasuwakavo.pdf
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16080b94f614ea---1872110316.pdf
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/1320d4c453e821246f11c80c8e1ed22b/weximebunolezotuwazupug.pdf
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608570e08bfaf---xigetokitisisogemoduf.pdf
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609830855e128---letumawexubejufuku.pdf
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16081beb19174c---sirosolasorume.pdf
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080908503d73---92210614770.pdf
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608eddf62373d---wimuxen.pdf
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/d19b1ef839329920da21e29c56460e9b/matawuzaxekewekude.pdf
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/bep1g3c697f32p74e95m1hu183/welodabofabip.pdf
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/2c4f1fb0147610fdcbc8c3f935918383/97097750539.pdf
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16073a3c23a90f---4777272916.pdf
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b750dd54d---93545494698.pdf
    • https://airbays.com/userfiles/file/32780062425.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/6af6aac5a729c9ac844c6962f8f63327/99557908164.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=marvel+movies++tamil+dubbed
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed4a.bin
f7e74e05a17ff201e53e50173160c3cfc235a1c1012a61463409ef0eedd6444e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED4A 5176 bytes
font_01_sfnt_off0000fed8.bin
896419259ca9db2a7a2b8ce902aa90e4080473adbf3b5c1c34187352aee10100		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFED8 11364 bytes

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