Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbb5456967db3714…

MALICIOUS

PDF

58.0 KB Created: 2021-07-23 17:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ef33d9dcfb0cd44dc7e82de2be316d2a SHA-1: 7c26b9419dd1c8bcc11ddac72d5b855962e8e6a9 SHA-256: cbb5456967db3714f3cf2632f2c5abcc4c783a88f4d6b48750c46d9c2f3849ed
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It functions as a link farm, directing users to numerous external URLs, many of which are hosted on compromised WordPress sites. The presence of these links suggests an attempt to lure users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9718

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://geometrabottero.it/userfiles/files/fapotitarotuwelifoganalo.pdf In PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160900d2ea84b9---33222146655.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a22076bd622---nutupibitasi.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/08dcbcf82da01c8718ed76fd0fe798dc/39267687305.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/30111312186.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fa0b5f2c9a4cac5bc3d329ae6bcc2065/bomokujusamux.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/3ee5fdd516ba0f98da2b61143ccd27ff/nonurelop.pdfIn PDF document text
    • http://pelesiuvalymas.lt/i/File/31575670316.pdfIn PDF document text
    • http://loaamtran.vn/files/usersfiles/files/milivitapunezadikis.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607eec4ac9ba3---toxobeluvosa.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/16077bbbd34ce6---butirizivuwadofesurur.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/ukuha3a5lldk3a6nu8nf229sg4/27803032593.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607b79c169967---siworekelejinovijej.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609d2f6497e6e---felezoxosobitevirom.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e75c68c5b82---74953113505.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160807ec1b56c2---dewiwujunikutanoripawam.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/sezowijavagetotet.pdfIn PDF document text
    • http://djarkitek.com/temp/vinney/HTML/userfiles/file/84612210721.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/puxefikejepirotinetakevul.pdfIn PDF document text
    • http://ekolojikweb.net/upld/userfiles/file/29782084451.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/a479ec1f94d6fe2bd2In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=air+cooled+porsche+engine+for+sale+ukPDF link annotation

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