Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee066fa26a901659…

MALICIOUS

PDF

86.0 KB Created: 2021-09-07 13:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 9eaa84c24b5b78d87cb0be480016aa6f SHA-1: 1242c6514d14e01ffa2e71ac234890763f5cc204 SHA-256: ee066fa26a9016593448e7a719de55d965db13233aefa7c00412db86f248267b
132 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3253

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bbad9c60d8f---43909485922.pdf In PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/e9gvkp3iqc2a9es6pl3n0tkvj4/jakaz.pdfIn PDF document text
    • http://cck-brno.cz/ckfinder/userfiles/files/mifasabugitete.pdfIn PDF document text
    • http://grandrosso.com/js/upload/files/bopalajitawexumexelekex.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/c8681d7243bf20487837d3c47a3b286a/34392571808.pdfIn PDF document text
    • http://manu-transport.com/documents/file/fidavuzoxudigirifar.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/de08097f677bb4611d0004a33e7d8446/99237458592.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/654b883a7d2e14e611a141193b70d61c/tadag.pdfIn PDF document text
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/576r56hm86ti6m5ldo2mf444to/sajot.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/31088010989.pdfIn PDF document text
    • http://asvpp.fr/pdf/lanazuzepifasowi.pdfIn PDF document text
    • http://eiffelflowersquesnel.com/userfiles/file/899033473.pdfIn PDF document text
    • http://jacsonsfurniture.com/userfiles/file/wuzabilavigilusoxu.pdfIn PDF document text
    • http://kemenyseprosiklos.hu/upload/file/8913586271.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfbf5c86cf6---84842448440.pdfIn PDF document text
    • http://parkettes.org/clients/b/b3/b30d687fb0e6fb0c44210170e51784d9/File/bujademovatamifuxu.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/37ac1dcf267df8e58fae83e8110ef868/11552211506.pdfIn PDF document text
    • http://southwest66reunion.com/clients/f/f6/f6f8b7bd17d60304c359e527a2c43449/File/numagaxetodakiluvama.pdfIn PDF document text
    • https://bosingels.nl/ckfinder/userfiles/files/36987975293.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/15689741763.pdfIn PDF document text
    • http://www.taxivanclass.com/uploads/ckfinder/files/ridapoperaxirup.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/jifeganadodarumetovefa.pdfIn PDF document text
    • https://aildf.in/userfiles/file/2486382916.pdfIn PDF document text
    • http://12shio5.com/contents/files/17125019415.pdfIn PDF document text
    • https://grafconsulting.pl/Upload/file/92756980876.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=angielski+slownik+pdfPDF 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_off0000ffea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEA 10472 bytes
SHA-256: 0184bc7dcbc6b26785e5e6c26789cc907a6f5a4d84c1675fb909198f2e3df42a
font_01_sfnt_off000117a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A7 20600 bytes
SHA-256: 85031a49a7c9a92384301a0e199a14dc767a8610a9da43dc3ef9a3d44b708053