Malicious PDF — malware analysis report

Static analysis result for SHA-256 063252eb7c665a05…

MALICIOUS

PDF

54.7 KB Created: 2021-05-28 12:28:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21e03fa540abbc4afb3d7910b4e9a66e SHA-1: 0623c93144dd51577b456baf7d78b6b5e003e73e SHA-256: 063252eb7c665a05f7a4a693bf890be383fddac801643f988206fe03a852539c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress sites, suggesting an attempt to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7443

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/68a0ac612537a7b2d0fa4609026fde2f/kifojeviluli.pdf
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2072222052---3063430864.pdf
    • http://cesishotel.lv/res/wysiwyg/file/sedigoloke.pdf
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/b55a96ddc06481b47d189f9ed1a01b00/watiwatodaxunesiredi.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ad986957984---xevunifimobaz.pdf
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/2op87r9m54nqdpb3u481urafp5/zefivudoxedetevotafukuwa.pdf
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073a982a0d07---36525335623.pdf
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a54314319---migurotanef.pdf
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1607886c02ad77---lukajiwebifoledalirala.pdf
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5f5e6d397---perivatifotiloxuz.pdf
    • https://condominiovillage.com/userfiles/file/79749074621.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085ed71015bd---54343695654.pdf
    • http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/4vq0p6lfeisr7a2595nabg7l52/78670890161.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609031d2abaad---xotinefafegubodewolezid.pdf
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b40b7b974a---kunepib.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=what+channels+does+dstv+compact+package+have

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