Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d83ae591288aac…

MALICIOUS

PDF

70.3 KB Created: 2021-09-14 11:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 70a7720530291383f063b62fcd21062f SHA-1: 4e2007ba85f547b4fe9f22672ce97d8256cd9ed7 SHA-256: c5d83ae591288aac147231469f7dd052680dbe7cab29e06e62fc65685117ee92
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including one that appears to be a download link for 'lightroom hack version'. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of JavaScript suggests an attempt to execute code, likely to facilitate the download or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8295

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
  • 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://ketchas.ru/uplcv?utm_term=lightroom+hack+version+download+for+android PDF link annotation
    • https://coevent.ru/upload/files/xatesepazimonoka.pdfIn PDF document text
    • https://www.pharmawell.eu/ckfinder/userfiles/files/dolevomolibaligor.pdfIn PDF document text
    • http://npas.ru/pic/file/sufogakufedugeriret.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/33089922143.pdfIn PDF document text
    • https://store-connector.com/_upload_bilder/_filemanager/file/kidolepaj.pdfIn PDF document text
    • http://www.julietlandau.com/fckeditor/userfiles/file/44168400579.pdfIn PDF document text
    • https://www.hemingway.bg/app/templates/js/ckfinder/userfiles/files/fojepubopetopolosepeka.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/89590447596.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/72002c31e9da01eb8793feccec0757d8/87443831195.pdfIn PDF document text
    • https://abctranslink.com/ckfinder/userfiles/files/91161035562.pdfIn PDF document text
    • http://rosesrealtyhomes.com/userfiles/files/81704731580.pdfIn PDF document text
    • https://rajakedua.com/contents/files/lasuv.pdfIn PDF document text
    • http://bannails.com/fckeditor_userfiles/file/62605169280.pdfIn PDF document text
    • http://esipro.be/userfiles/file/notukofitetuz.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/nuzejudowabu.pdfIn PDF document text
    • http://ancient-theater.gr/media/file/82536930486.pdfIn PDF document text
    • http://www.huntsvillepr.com/files/files/44271924374.pdfIn PDF document text
    • http://poliinc.com/upload/files/kepolenuwuver.pdfIn PDF document text
    • http://word.mn/uploads/assets/74979576983.pdfIn PDF document text
    • http://mvpbuilding.com/userfiles/file/zogivijozufoz.pdfIn PDF document text
    • http://dellalontra.it/userfiles/files/fezifudi.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/60907ce30479415df8be612efcb22b92/72771263548.pdfIn PDF document text
    • https://wspaperbag.com/userfiles/file/mogesodiru.pdfIn PDF document text
    • http://bimbrlata.cz/UserFiles/File/91932056661.pdfIn PDF document text
    • 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_off0000c901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC901 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE118 11124 bytes
SHA-256: 5c30587cbf3f77062439a3078fcb5b1b01581e72f9aa7d627ce1642cb43392d0

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