Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e1b739c5ed53d7…

MALICIOUS

PDF

64.0 KB Created: 2021-09-26 01:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 7d6dac712b305ada7d2a8665d37f68eb SHA-1: dfccb84fa2b809e02cf47051d32df17f7c7f0f26 SHA-256: 00e1b739c5ed53d71640909a27ab5f8998d3f70843ebc5fb200fc18dbfb091ee
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The file's structure and URL distribution align with a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5541

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://badanie-wody.pl/galeria/file/10257964298.pdf In PDF document text
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/a16c0a984d073f2240836c5edc2ba329/midamizenutoxojasi.pdfIn PDF document text
    • https://mackbeks.com/files/file/16995124134.pdfIn PDF document text
    • http://www.klimavill.com/data/editorfile/66479970206.pdfIn PDF document text
    • http://cuboni.com/uploadfile/hong202109231031251133.pdfIn PDF document text
    • http://itfkarnataka.com/cvsprojects/SSK/Source/2.0.0/images/files/40683045247.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/1e41056d9b582f56df49e39890bbd7ea/85286943544.pdfIn PDF document text
    • http://thomas-zigon.de/images/file/janoposag.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f7c9372dff---ruwazexowumavedurepezaso.pdfIn PDF document text
    • http://exclusivelimoservice.com/ckfinder/userfiles/files/dewigawoge.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/st90em19111vb3b9gg9mg667nr/tunofozadibinokibomajovi.pdfIn PDF document text
    • https://anhhuynoithat.com/asset/files/vemaxukunivirilosiw.pdfIn PDF document text
    • http://skontrolsengineering.com/file_media/file_image/file/tuvuvomedaji.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/kelemumopodel.pdfIn PDF document text
    • http://dijladentalcenter-qa.com/userfiles/file/bumepaf.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dd1f5cbdb0---83372765599.pdfIn PDF document text
    • http://karimeh.com/public/userfiles/file/lelubutubewulutebotavix.pdfIn PDF document text
    • https://adci.vn/data/upload/file/41658649773.pdfIn PDF document text
    • https://museuminiaturesbesalu.com/files/85705289686.pdfIn PDF document text
    • http://livelyway.com/ckfinder/userfiles/files/16890729639.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/6e943a57df14cf035adbf7aa9fd3e650/46285419045.pdfIn PDF document text
    • http://uzks.hr/upload/datoteke/80612515348.pdfIn PDF document text
    • http://rorolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jewimogogepudet.pdfIn PDF document text
    • https://reparation-mobile.net/userfiles/file/30618816584.pdfIn PDF document text
    • http://tongrentangthai.com/UserFiles/file/88839034257.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=attached+book+pdf+freePDF 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_off0000b7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7B6 16052 bytes
SHA-256: ccd63ff59a28dd0ef7a4f960c83c4bfa959e6a0323c880a3c7d8c80c390e8581
font_01_sfnt_off0000e08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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