Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed669a8a5a24c49f…

MALICIOUS

PDF

77.9 KB Created: 2021-08-16 09:12:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: c0ccc145aeeb95c88af21d0a80359e38 SHA-1: 60875e7077af73909c4078d6a3ce06dea1c6f38c SHA-256: ed669a8a5a24c49fb234995fd40ee8a19b0a46d2d896459c030a2b565d844ea1
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it likely contains an exploit. The document functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to phishing sites or download further malicious content. The presence of external URIs and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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 https://bititechnika.com/uploads/file/vikakudoje.pdf In PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160899b54e33fe---wudepowarobatotufebol.pdfIn PDF document text
    • https://tecnomatec.cl/upload/file/19294660818.pdfIn PDF document text
    • http://tvoirostov.ru/ckfinder/userfiles/files/78738356984.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/wujovivobaferadufuwazud.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb69f82687---28588377373.pdfIn PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/23489558991.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/najatufufakozanegulubiwa.pdfIn PDF document text
    • https://rubfila.in/files/file/lexewijupekuwidafasokoxi.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608004868bd5d---67143949276.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/55df34c3d3920ef8daafeaa56064874a/vupetowaxilogivikugik.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16092877c04e29---73597842455.pdfIn PDF document text
    • https://kudamatsu.org/userfiles/file/3881449020.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/b315d955f6642925461f8d4f6aec5966/31605422139.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765d5142aa1---towukefetuxefabot.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/a0n7cfv0bosc729m80rs5damhh/71335842146.pdfIn PDF document text
    • https://rawoctane.com/uploads/file/volujegaxoperufawuk.pdfIn PDF document text
    • https://tsegypt.com/file/31756599235.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/nppjv75cn8rmrnka1b7hfer5sh/vejidane.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/69b6eabd7b0df927e7ec96ffa151d9ce/72214783555.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/65204d175e49f88dc3ded958f6c70ea3/doxemizidazus.pdfIn PDF document text
    • https://www.avantagesapp.com/uploads/files/wufuzulekogeliwigep.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=fast+and+furious+3+tokyo+drift+google+docsPDF 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_off0000e69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69E 11108 bytes
SHA-256: 2be46cead56c1c77a35544460da747a89de238e104f1ffd5f6e28d27df580727
font_01_sfnt_off0001007e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007E 29520 bytes
SHA-256: 9080e54bd123a87560a72aa98ca95cfe38e1bc646829ba196df00ae797f0048a