Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e15af060938cc36…

MALICIOUS

PDF

112.4 KB Created: 2021-06-25 20:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 50f1666e6efe3912df6e41420be2b353 SHA-1: b3c1493a12a90ed4b66c107e8dcbd43f34a14b16 SHA-256: 7e15af060938cc36df96bfb9d036c47c5f9b327a28c688af5371d136378ccd70
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as a phishing trojan by ClamAV. Static analysis revealed numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The document body was unreadable, but the heuristic firings strongly suggest a malicious intent to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3958

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 http://transbur.ru/admin/ckfinder/userfiles/files/24802834542.pdf In PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/732ecb65cd8cdf5c331a81e97c34228b/jafawawelixojodadinujun.pdfIn PDF document text
    • http://naturallabs.fr/userfiles/file/1032191524.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/tusebamepo.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e5f5d8654---26252965433.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/1fdb90a360b7277f0d7484b9df868137/janow.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/ravovogajepuwarodis.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/4b2e2ee56f115a1c2f397cf510be9e33/8609675190.pdfIn PDF document text
    • http://maihome.hu/admin1/file/zafoxuga.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/6927f92b1cbb0f85048bdbb0b84a81c4/81045020180.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608460c5caa90---36418116834.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a20a3358060---66042582445.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160830deccec29---58032677484.pdfIn PDF document text
    • https://perfecthospitals.org/FCKeditor/file/siligipuletomab.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/995150352636d90d0b12f4281b8b2e07/tapimez.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/98648721646.pdfIn PDF document text
    • https://activepymes.com/pub/file/zusepuw.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/2f4a8f3201933ffcfd5c57d012272144/88921242795.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/s5q6ovnqauhq9d6bp0a6h671m0/bosuviloluros.pdfIn PDF document text
    • http://haciogullari.com/depo/sayfaresim/file/watogasubosugu.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160b12a6e257d4---katidejonoxibososeg.pdfIn PDF document text
    • http://phuocthuan.vn/images/pic/file/17048006530.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf5f771560---nebukap.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cef16eb9f69---5036104165.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160874bdf9f9cb---13744526199.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=48+hour+dry+fast+resultsPDF link annotation

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