Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf771075a002e05…

MALICIOUS

PDF

47.7 KB Created: 2021-06-28 21:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d96c6acdebcafa7e7d1d091c50c54ed3 SHA-1: fb4ede5918e0d9f43a0163a0f3b6ece6506523d9 SHA-256: fbf771075a002e0552fc38de26a73993e3dcc94604f8cd058e99e700b0c70c24
154 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to compromised WordPress upload directories, indicating a link farm designed to distribute malicious content or manipulate search engine results. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of multiple compromised URLs is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

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://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac130e99112---liveturoxemogojat.pdf In PDF document text
    • http://vinag7furniture.com/app/webroot/files/editor_upload/files/91717815359.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/a4aec61a604b3714ffffd9862d683d68/80270221987.pdfIn PDF document text
    • https://ancoraeducacion.com/images/mekojajuwonajulumelut.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/cc9f2afc51dc56bd7bf66ab97398b546/tumezerolober.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160cd5aeba6e75---sarado.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a927b18ab82---nomegidegoxobasej.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/65c9350fa27fbe5789bb2c7c9afea1ce/zidaketumoledimepovu.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/c4f38b889f894841c743b6762df0168b/bivedepe.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607e903deb0f5---demafaxu.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec5e4d1347---60228118059.pdfIn PDF document text
    • http://eltonltd.ru/sites/default/files/uploads/lafixawukajivamij.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/usa4jh13s291trlt302636ai4f/289372808.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/4a3f96d3bfd4a53ed9b511170f03e045/wabodijokejuzexotolexe.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/fgst2rre1r18n7uvraip8ne2i2/96494177194.pdfIn PDF document text
    • http://karat-dobremiasto.pl/userfiles/file/17669271849.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/botatavadatalafe.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/rixavojigawopozenagobe.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/5ckm3k3hmlu4ptc4n6jl0gosm0/70963851551.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609af91507c80---6582809634.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b65edb63b1---63073671771.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/e0f50c756c054e27eccf7661a750a999/45165562031.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/ab9c651de94bfb7d12c3eaf2673d82dd/65606808637.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8cb95a480---86571173688.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=northstar+3+listening+and+speaking+fourth+edition+pdfPDF link annotation