Malicious PDF — malware analysis report

Static analysis result for SHA-256 122a82110a9ec52b…

MALICIOUS

PDF

56.8 KB Created: 2021-07-25 17:35:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: be61c2c7082ac5c4ab7c1ca935727777 SHA-1: d8b9fa8ae3e483dd912a3f08a6366899f26dd6fa SHA-256: 122a82110a9ec52b429ab7c46437bd0eafd6fb153b7128611d31e1922edcc748
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to other PDF files hosted on compromised WordPress sites. The presence of these links suggests an attempt to lure users to malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8840

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 http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079910430445---wimuzoni.pdf In PDF document text
    • http://ideviceplus.nl/app/webroot/files/userfiles/files/rurumol.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084eb3798f2e---tewevesuvodanaku.pdfIn PDF document text
    • http://palami.by/images/file/81329314811.pdfIn PDF document text
    • http://szguilong.com/userfiles/files/19214254653.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761fcfb9e6e---41290235610.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac087c2c75d---14498133905.pdfIn PDF document text
    • https://topjobsnepal.com/ckfinder/userfiles/files/86375825738.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/ec596dee8a54cb88e73ea3335e8cb6e6/42585857932.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3a439cdb89---xefidir.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/rusekifup.pdfIn PDF document text
    • http://limoride.net/gallery/file/pimotawozedojefekov.pdfIn PDF document text
    • https://eurotig.ro/file/12230317484.pdfIn PDF document text
    • https://creativitagh.com/pevron/www/img/file/66843530258.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/30fgsvdcqatmnt9dbt674mom4g/nawutugegoze.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/kggt895bu7sim5mjls255dbaa0/54165292305.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/lirobupivedufupu.pdfIn PDF document text
    • https://bestrecycledautoparts.net/images_i/file/58674260996.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/2202bc886718e346774e34461495c4b9/48170273421.pdfIn PDF document text
    • http://haustechnik-hagenauer.at/41509317546.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/f1ddee65ed1502f68cd5c920efcf6c13/zomojodadiwozubojusape.pdfIn PDF document text
    • https://yesilkoyluleriz.biz/resimler/files/70091750522.pdfIn PDF document text
    • https://dvg.asia/ckfinder/uploadfiles/files/5954114513.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=is+veryfitpro+app+freePDF link annotation

Related samples 8

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