Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e96cfd6ff7f94cd…

MALICIOUS

PDF

47.8 KB Created: 2021-09-17 11:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 27e7db61bdaa78e28dbffad7cd34ae80 SHA-1: 3d125ded85a45fa639f2502f139e98cf6fc2713f SHA-256: 7e96cfd6ff7f94cd54595ea8bf0346ea990ebd00e17c03398a4fc3cda0998fed
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and ML classifiers, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded JavaScript indicates potential for further exploitation or payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6966

Heuristics 6

  • 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.
  • 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 https://coretry.ru/uplcv?utm_term=anime+hd+apk PDF link annotation
    • http://the100voicesofgospel.ch/fichiers/newsletter/file/wedapimuriv.pdfIn PDF document text
    • http://szyoujin.com/UploadFile/file/20210901125042272.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/3ac5d6b84bcd4d3f20296bfd9e18c3fa/50009140597.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/c94120cfbea482e5340fb740c575a115/pivejarutob.pdfIn PDF document text
    • http://myxroad.net/upload/userfiles/file///61093296477.pdfIn PDF document text
    • https://congchung7.com/upload/file/nesezujarem.pdfIn PDF document text
    • http://www.ville-dammarie.com/ckfinder/userfiles/files/zenuvalopis.pdfIn PDF document text
    • http://candybeauty.vn/upload/files/45154469924.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/1c9d5022e844791100f636a41b5913b3/46789765176.pdfIn PDF document text
    • https://dogathermalhotel.com/resimler/files/lavowulelixesopupow.pdfIn PDF document text
    • http://qhzs88.com/admin/fckeditor_upfiles/file/2021091016001380554.pdfIn PDF document text
    • http://benetworkingpro.com/ckfinder/userfiles/files/41869732420.pdfIn PDF document text
    • http://phukientubepxinh.info/gomsu/sanpham/anh/files/wuponirarufof.pdfIn PDF document text
    • https://girisimhaber.com/uploads/file/mumipubabenogobixini.pdfIn PDF document text
    • https://cpc-serbia.org/js/files/87771967616.pdfIn PDF document text
    • https://kuepancong.com/contents/files/88942786574.pdfIn PDF document text
    • http://sevenseahotel.com/uploads/images/files/vofefinidadevibikuguzem.pdfIn PDF document text
    • http://didopack.com/files/21963573348.pdfIn PDF document text
    • https://22importexport.com/eimages/file/20546476961.pdfIn PDF document text
    • http://wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/bazojuzosemo.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/9729816722.pdfIn PDF document text
    • https://termoformat.md/img/files/14978417571.pdfIn PDF document text

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