Malicious PDF — malware analysis report

Static analysis result for SHA-256 73f5be6ef95e1dbb…

MALICIOUS

PDF

226.5 KB Created: 2021-08-11 17:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 11b696d2f03ea96ba87c5e6bc1a08be5 SHA-1: b31ad1a5ceec08668e5d94a59f9b32ad33c4e526 SHA-256: 73f5be6ef95e1dbba34b777c5e5cd742947ea5b84dede1f727a868324585afa4
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code. The heuristic firings indicate that the PDF links to external resources hosted on compromised WordPress sites, suggesting it's designed to download and execute a second-stage payload. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7744

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1607db7a2b6ab8---fimon.pdf In PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/5ea5fd758457b0d4444c02873d25755a/73262761543.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/e17i8q3s0eugvsje511hkpn6n8/95257040583.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/489d04d22e9ad77e60aaeb16fadbb7bd/bewezudupixofemekude.pdfIn PDF document text
    • http://pensacolahigh1964.com/clients/1/1d/1d652d7f5bd5fd2f3712913460b20393/File/96866871542.pdfIn PDF document text
    • https://zhansq.cn/upload/file/31781596915.pdfIn PDF document text
    • http://doo-san.com/userfiles/file/20210510085330.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/goribizeteva.pdfIn PDF document text
    • http://yomamasushitogo.com/uploads/files/betovunotegibikegosani.pdfIn PDF document text
    • http://poexali.org/static/image/_u/system/files/weveboj.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d8d010ea832---zatijipujawenupuzun.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/hkovg0gkvpejs7i8vifpe9l2b0/fifutijiliwodekowipuj.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100a8e62b826---85465433995.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210505022445186.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/sezimapunebame.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/7a1a3606171f4e585fa16210483b2526/sumekumiwopozizirodibozin.pdfIn PDF document text
    • http://ozgu-yapi.com/firma/files/xenisezosimuva.pdfIn PDF document text
    • http://skyrunarser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210728151106313924x287r9.pdfIn PDF document text
    • http://grotech.in/userfiles/file/44819749835.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=%D8%AA%D9%88%D8%B3%D9%8A%D8%B9+%D9%85%D8%B4%D8%AA%D8%B1%D9%83+%D8%A8%D8%B1%D9%8A%D9%83+%D8%A7%D9%84%D9%85%D9%88%D8%B3%D9%85+%D8%A7%D9%84%D8%AB%D8%A7%D9%86%D9%8APDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.