Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db7524885b29c1c…

MALICIOUS

PDF

62.5 KB Created: 2021-09-22 14:21:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c6139525dc1ad3a1093634cd916db842 SHA-1: 3a9dd26283fc39c5ff0834043ab150075b4e957d SHA-256: 1db7524885b29c1c17a775374240e34b6e96e15c986a6be6ef63d32c0c9942bd
132 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and a large number of external URIs, many of which are hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing sites or download further malware. The embedded JavaScript is a common technique for executing malicious code within PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7892

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://krisoc.ru/uplcv?utm_term=gba+emulator+full+version+free+download PDF link annotation
    • https://semsaesp.com/ckfinder/userfiles/files/23215533881.pdfIn PDF document text
    • http://massvt.sk/editor_uploads/system/files/935814048.pdfIn PDF document text
    • http://videofilm-tv.ru/content/File/93703702145.pdfIn PDF document text
    • https://istanajpdua.com/contents/files/26032442667.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/67195104722.pdfIn PDF document text
    • http://rotarycochinharbour.org/ci/userfiles/files/rigevupowawitimog.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/12a09eec38b90d22df76e5888c2b71c7/rinovep.pdfIn PDF document text
    • http://www.erealitysolutions.com/tennisontario/assets/appsadmin/js/ckfinder/userfiles/files/merivug.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/2bc2aeed459a0834e1d4e991838acc9f/65061779235.pdfIn PDF document text
    • http://onsijsselstein.nl/userfiles/files/rebonapidofixob.pdfIn PDF document text
    • http://stonepigments.com/userfiles/file/1058524585.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210919_7BC57F9B93C12CB3.pdfIn PDF document text
    • http://anipetkingdom.com/webroot/img/files/rajumu.pdfIn PDF document text
    • https://moyaexpresss.com/ckfinder/userfiles/files/69681623613.pdfIn PDF document text
    • https://greenfuturevietnam.com/Upload/files/42429921042.pdfIn PDF document text
    • http://dzbnf.com/upload/file///widikotitepiveluvabupiso.pdfIn PDF document text
    • http://immobilieninvestors.de/userfiles/file/mukiput.pdfIn PDF document text
    • https://khangle.vn/uploads/images/files/48592306707.pdfIn PDF document text
    • https://jlgardner.org/home/jlg/public_html/ckfinder/userfiles/files/wewupaw.pdfIn PDF document text
    • https://anmimar.com/royal/userfiles/file/17015036716.pdfIn PDF document text
    • http://www.heatandgas.com/EditorImages/file/mobinibe.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bbce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBCE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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