Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c77ad7b5c27b3f…

MALICIOUS

PDF

67.9 KB Created: 2021-09-09 11:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 095ddd83c06b94401172ee2dfddefc60 SHA-1: 53d5b5ea71e47107c3a6eeda08e121ab3aeb1bc5 SHA-256: c0c77ad7b5c27b3f2c906d87bf6c1cc507cf42410f074c643746b7be6832a9ad
132 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, many of which are part of a link farm hosted on disposable domains. This suggests the document is designed to redirect users to malicious websites, likely for phishing or to download further malware. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5231

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
  • 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://generalaudit.pl/eurostyl/photos/file/3308003449.pdf In PDF document text
    • http://aeklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/65800349418.pdfIn PDF document text
    • http://cu-hinothai.com/ckfinder/userfiles/files/pafuvivune.pdfIn PDF document text
    • http://logicamail.it/draft/media/81303319219.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/25780484268.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/itq97e3k3uivqiie7do93lmorc/bonasigixuvetejija.pdfIn PDF document text
    • http://15881588.com/ckupload/files/viwudilafogadozoxunufawu.pdfIn PDF document text
    • https://mb-classic-service.de/userfiles/file/29157123379.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-9-7/20210907220011691053.pdfIn PDF document text
    • http://m-styleauto.com/js/upload/files/60795201137.pdfIn PDF document text
    • http://serviphony.com/tinymce/jscripts/tiny_mce/plugins/phpimage/phpimage/upload/images/file/jokuvopagutuz.pdfIn PDF document text
    • https://icon-studios.com/userfiles/file/14522285268.pdfIn PDF document text
    • http://lycee-elm.info/userfiles/file/jobewedamojusumoxoseso.pdfIn PDF document text
    • http://perksys.com/userfiles/file/satoxakuzexivakakak.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16138e8a33c320---mamir.pdfIn PDF document text
    • http://stroi-sistema.ru/img/28027132211.pdfIn PDF document text
    • http://cs-web-design.de/ablage/userfiles/files/botuxakedadira.pdfIn PDF document text
    • https://ahl2005.com/ckfinder/userfiles/files/61819302907.pdfIn PDF document text
    • http://massageindex.nl/images/uploads/lowov.pdfIn PDF document text
    • http://recko.ru/ckfinder/userfiles/files/31038140103.pdfIn PDF document text
    • http://rotarybrescello.it/userfiles/files/64945599217.pdfIn PDF document text
    • http://fsgpj.com/upfolder/e/files/20210907055610.pdfIn PDF document text
    • http://stolizstekla.ru/userfiles/file/63085070824.pdfIn PDF document text
    • http://csc025.com/userfiles/file/20210906225533_3gizbv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=bedford+point+gta+3PDF 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_off0000bd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD87 19704 bytes
SHA-256: ae8ce3e65c5597b16333565ee2cec8d33590cbf240a681ada4a8ab8f0377d175
font_01_sfnt_off0000ef70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF70 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.