Malicious PDF — malware analysis report

Static analysis result for SHA-256 200322d263913d85…

MALICIOUS

PDF

79.7 KB Created: 2021-07-09 14:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a8f7e3786ef709a03b42a5a99feac6f7 SHA-1: e057ccccabb0e2ecd172c5a3bca9c694fc75c1fe SHA-256: 200322d263913d85adbaebcf0cea5ce72996a49be7f2e050e63f06d504273754
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 clean score 0.2244

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 http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/g45ebq2ptuenomvapq6e7hvsdb/vozaxidamegoxo.pdf In PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/c9087fb366b29178a980a6af415213a9/figodumoxo.pdfIn PDF document text
    • http://merwepizza.com/upload/file/53868029528.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160bb63b455e87---73358213273.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870d57c4696---lupudopebewakom.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/155ed6e8d0879e8f80ed07bea09542c4/44626795154.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/vobebabaf.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/dad063839ffe552b96aabd1a96a8dd19/viwolilanulejeburerenixeb.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160706c7616bd8---74698703428.pdfIn PDF document text
    • http://socukorglutamatmentesfuszer.hu/ckfinder/userfiles/files/59012796023.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160af674496400---riduzozijuzumibazonukabuk.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609830f42ec48---jemezawebatete.pdfIn PDF document text
    • https://ismart99.net/upload/files/pinilejetuparojenudi.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3669d23d3---xofuvejaterotoget.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160757f9af3900---28696024755.pdfIn PDF document text
    • http://scheiden-maassluis.nl/uploads//file/86527896921.pdfIn PDF document text
    • https://baoholaodong24.com/userfiles/file/tefumidemomagunevunikijo.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160de651ba9497---vodorideboxa.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/47604f1647357e7910665cb998622bba/pagabutedolepulesaw.pdfIn PDF document text
    • http://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/pixosumubanuxup.pdfIn PDF document text
    • http://mcutech.net/upload/2021/06/file/16244937251201110201.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ae333473745---vegavuzemojupixidadivi.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/gosogegewuxewex.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ecfecc76f1---fawisarasowirevopodujibu.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607f9a72a8a85---51158271360.pdfIn PDF document text
    • http://landia-print.com/pdir/file/78154519173.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/a2e818371cb78cdf4e2656297180b30c/26339022243.pdfIn PDF document text
    • http://paintmaster.hu/js/ckfinder/userfiles/files/falizote.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=wisdom+tooth+growing+painPDF 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_off0000f419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF419 16760 bytes
SHA-256: edac8d7347e2e38084ef29def3bcd5fae52a220535e289d266f848d6e76ae4d2
font_01_sfnt_off00011fc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC3 10740 bytes
SHA-256: 50bde00a13a6a0e406d66a45bd3e9dc83466826e0adca7a012528f9b12299322