Malicious PDF — malware analysis report

Static analysis result for SHA-256 13ee6e1eee277928…

MALICIOUS

PDF

80.3 KB Created: 2021-07-22 10:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 581c6114619e551fa9369586dd9bf34d SHA-1: e55bfa74cb372284e8f509f83d3daa023979c72c SHA-256: 13ee6e1eee277928ee4bdee35cac771dc608cc35e28754363992ccaa42c4f5bd
124 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised CMS upload storage, indicating a phishing or redirection attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. The file's structure and embedded URLs suggest it is designed to lead users to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2722

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 https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160ecaaf7c8c74---ganepuxakosodovoxexizaz.pdf In PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/0fdaabd1d041078581af1b8ad743bcc8/jidoni.pdfIn PDF document text
    • http://www.elstar.ru/uploads/files/tupafasubiderogoso.pdfIn PDF document text
    • http://dailitara.lt/bites/uploads/file/gamukowoxagotami.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608a049ee2449---73254222727.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/288851d0b5e546396de32eceb2a0a6ce/50956099319.pdfIn PDF document text
    • https://aldaserwis.pl/ckfinder/userfiles/files/vupunusun.pdfIn PDF document text
    • https://topclassgreenery.nl/images/file/wenakikakexasomawisa.pdfIn PDF document text
    • http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/lafawa.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/omf2m3vjuc1d8ru718stv34su4/40441604678.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c60314843df---rabobaxutavadu.pdfIn PDF document text
    • https://golf-tout-terrain.com/publish/page/file/muvajopobebone.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090520bb6edc---44595097330.pdfIn PDF document text
    • https://minegociomiweb.com/userfiles/file/64127563670.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160763b49357cc---bovawem.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a20eed22c95---67146106614.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/54771113532.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/ae6194eb9bc1a9213de88ec3427583f2/50642175015.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607fda30b8fa7---xabomonuniralumujefal.pdfIn PDF document text
    • http://flexa.cz/docs/file/90605513329.pdfIn PDF document text
    • http://lamorenj.com/userfiles/files/56215855264.pdfIn PDF document text
    • http://geombiagioschettino.eu/userfiles/files/28282411951.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/cea27201078b68ac63cd16fabb538282/fizuwonanezugekef.pdfIn PDF document text
    • http://bocghedanang.com/media/ftp/file/merivoxemipat.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/414c8613b6a648c32db2a9aa720ca053/jeralonuxiwanepegetof.pdfIn PDF document text
    • http://ramenzoni.eu/userfiles/files/wevowunin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=canyon+point+campgroundPDF 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_off0000e989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE989 17040 bytes
SHA-256: a1dac406f69cb50fcd91ae5e33eb1413499e3eb20de9d8f6349cd86b7617f433
font_01_sfnt_off00011667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11667 10756 bytes
SHA-256: 4380cc9fd4a2a8af7ff2eed8283d5a6f0f3d5a21d713195f238a97ade92153b2