Malicious PDF — malware analysis report

Static analysis result for SHA-256 a23ae2c41f408b2b…

MALICIOUS

PDF

85.9 KB Created: 2021-08-06 21:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 14734cbf7ed723e9339a6379bda89b1d SHA-1: 47654bf4041795a0b087a7a0dc043b998cb892a8 SHA-256: a23ae2c41f408b2b5ae2cf142eded0f9498461472de552faeac6f543ce14cc9d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3499

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://pixomot.ru/uplcv?utm_term=watts+autopsy+report+pdf PDF link annotation
    • http://project-lovcen.me/userfiles/file/69556179578.pdfIn PDF document text
    • http://www.trafikyaren.com/wp-content/plugins/super-forms/uploads/php/files/7ikp59qia1km1rgv8uvk8pj054/gevememazarepeviwelexo.pdfIn PDF document text
    • https://dietacud.eu/upload/file/24723677776.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609837c53f090---25257575148.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/sixax.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/bunenabof.pdfIn PDF document text
    • http://crystalsteakandstogie.com/clients/1/1d/1dbb6d5698303b6304ae84622e226a19/File/puwevonufevunudis.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/f4391af61335b753a4edc766891a8b74/86931468415.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/27vndb4ifugpmhuiuqc2kokko6/susonukunimofumevoboni.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/23cb80d4e13bdb885f55530e40a02dd5/lubavezulibuxulipuxe.pdfIn PDF document text
    • https://www.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a0cdc7d29---fonivoziv.pdfIn PDF document text
    • http://parentini.it/userfiles/files/fanudefamadasemidunovivi.pdfIn PDF document text
    • http://3xlove.com/uploadfile/file/samipulapejexuku.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/6f538c4e377f2c6166e8f05826b8bc2a/32027036357.pdfIn PDF document text
    • https://areicon.com/images/file/737982509.pdfIn PDF document text
    • http://dnepropress.net/files/file/fenodesukov.pdfIn PDF document text
    • http://ilovechardonnayhills.com/userimages/toponuziwoxotagekutobudu.pdfIn PDF document text
    • https://seeandhearbetter.ie/img/shop//contents/kogifovut.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/81832281120.pdfIn PDF document text
    • https://campermagazine.tv/public/file/wigilitufasovilewi.pdfIn PDF document text
    • http://blissrenewbeauty.com/newerac2c/userfiles/file/47380321248.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e9016357e07---xinapazexibuwezexumesava.pdfIn PDF document text
    • https://bompentax.com/quangbasanpham/app/webroot/upload/image/files/wugadazusigesapazedokes.pdfIn PDF document text
    • http://cosmikkino.ru/sadm_files/92065429302.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_off0000fefe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFE 19660 bytes
SHA-256: 670d15cfc80b0e49987e12cc5cafbcb07c07a13a4d58a357cb9ac1560fb9694b
font_01_sfnt_off000131cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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