Malicious PDF — malware analysis report

Static analysis result for SHA-256 588e0a2c9d50c1dc…

MALICIOUS

PDF

79.7 KB Created: 2021-07-15 16:24:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b10cc89a95e942efc3257ab6d3707b73 SHA-1: 59c98968286c06ded7ad2b80fa47ccad60ebce32 SHA-256: 588e0a2c9d50c1dcb31c84a3c57412c740e0a82d33cbec898ec4edce11589303
124 Risk Score

Malware Insights

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

This PDF file was detected by ClamAV as Pdf.Phishing.Trojan. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress upload directories and other disposable hosting. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4208

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://royalgoodviewresort.com/Uploads/file/59194595272.pdf In PDF document text
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607a2587f3f95---fizekibewuwikuz.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607c5e082fc56---42914619811.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a6529bc06---44807539336.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3baf81e8a5---fazatetowosimobulevejijax.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16086dc9b803a5---55780864065.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/35281728094.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/11986052991.pdfIn PDF document text
    • http://burragebrothers.org/demo/jolie/beta/userfiles/files/tejotoxo.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bf87b60bd62---35736386323.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cce86f3056---50452579110.pdfIn PDF document text
    • http://tehnicgaz.eu/files/file/pukubopam.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a39cb7b9b---22799356296.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/b3375ac97e912ab5df765f20f6897dfa/jerof.pdfIn PDF document text
    • https://laetitiabernard.fr/images/file/62361500616.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/mofedulowanavagu.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/5j0d2tmv8utm99kjha3ir3b0f0/fijunalonedukipufus.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/baceb3e9f91308aea162959101a93ae8/koxosorelonesinuxe.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b475f2d08d2---kupenevowomakajunetof.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6dd43a4a3---42068197781.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a26e8e6a74e---4116443225.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160834e88afb7a---dabexenotupul.pdfIn PDF document text
    • https://rybczewice.pl/userfiles/file/98556788464.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/af85edd00d02d12da443ad784f6d8606/vuwulukija.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/8bb45499d66f8198f68372a8ced21822/lifawonawotosumawurub.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=they+knew+they+were+pilgrimsPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f14f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14F 17332 bytes
SHA-256: b7c575da95b71f46edcbe9d3615b9dbba3d669686fb0660f3924e0fe848ae4a3
font_01_sfnt_off00011e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E83 10672 bytes
SHA-256: c81321bc380ba8ac59e2b91786fe9a585787e47d9116f7613ff414e6d5b3bb9c