Malicious PDF — malware analysis report

Static analysis result for SHA-256 2caa1b9650fec111…

MALICIOUS

PDF

62.3 KB Created: 2021-06-26 09:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 866bdf96c19581bc81d8b72879929660 SHA-1: 430b51b252fe27ab505454fe18a408d452212915 SHA-256: 2caa1b9650fec111effa91b67cd97de3827d823b81a822304c9e4feca1289472
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external websites hosted on potentially compromised CMS platforms or disposable domains. The presence of numerous URLs, many pointing to WordPress uploads, suggests an attempt to distribute phishing content or further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5168

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://coretry.ru/uplcv?utm_term=puppy+aggressive+play+biting PDF link annotation
    • http://afslab.asia/upload/files/delemepikasemogewizika.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/sfhn1nt776krpdmfirdmnotv3u/mefovarijotigaxosokixe.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5d23eaab4---3541439331.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/dutikilapawakusat.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160baed4c67758---12304531723.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1666cc2bd---1461902898.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/25528188945.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/qm8bkmlndlqor1a5ui2afmc57r/savule.pdfIn PDF document text
    • http://iberia-ex.com/images/blog//file/32927491697.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a54a6962f92---44686829995.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/95269b321f0eab22fcaf788ea6e9d201/zifurezanunaxejav.pdfIn PDF document text
    • https://pharma-tools.eu/galeria/file/gulivikaweli.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/88786085700.pdfIn PDF document text
    • http://zamokugrofa.sk/admin/fckeditor/file/tovudemexeba.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/lgkkdc1sa6dg8dlccocd1b5nme/34241757727.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/ed1b5d43d38b170733406131e1fb912e/91631966787.pdfIn PDF document text
    • http://owv-sad.de/userfiles/files/viluxorironemarutoluxerif.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b59e22d642---49662473757.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-5-3/20210503094822969886.pdfIn PDF document text
    • http://stellarp.com/userfiles/files/95199679659.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/bd39f9af0ec10fc3d662c17cde4a29e0/desotifugi.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/460f1fdb11565f633711e806e1fa293d/37931949914.pdfIn PDF document text
    • https://dollarplus98.com/images/upload/files/bifozejomuloko.pdfIn PDF document text

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