Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6809f9aaed7b4cf…

MALICIOUS

PDF

58.4 KB Created: 2021-05-28 21:34:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb6a2f75eb425a68965e5565ddf87138 SHA-1: 58fd976168f0eb043ae9b0cd3abfcab56c95621b SHA-256: a6809f9aaed7b4cff1bbeeb389d3964be9a60ea6241c1819841008e975d7116a
94 Risk Score

Malware Insights

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

The file is a PDF that contains embedded URLs pointing to other PDF files, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest this PDF is part of a chain designed to deliver a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9746

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607766ec28afc---26597534629.pdf
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f34cfc6e10---33184961985.pdf
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085894db3da3---44949305013.pdf
    • http://axwelindia.com/uploads/13104047201.pdf
    • http://ctkupavna.ru/upload/file/34740642375.pdf
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/f769ac47526f32473c3e213a22b780f9/doxaju.pdf
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/eed43ed7f109f8aa1ae37389a7be32fd/21190690548.pdf
    • https://tavio.ru/files/file/74187030175.pdf
    • http://monkey-do.net/userfiles/file/63094772603.pdf
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/nqnip7i1cc82ge22nor3uaqhvl/66323874698.pdf
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16097259314b5f---besorujanam.pdf
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/3df65b69ca7a5ced3a97bfdab8342e26/84327212907.pdf
    • https://aimhc.com/userfiles/file/9514279811.pdf
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/qcv8e6al9s3pl5po2obv2632mf/wefobusur.pdf
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/07tmqv6g8vtkb9h5l2s27ms784/dusamisoki.pdf
    • http://dunajecbiala.pl/upload/File/13569748997.pdf
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160878aa3d70fa---pupajewovisune.pdf
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/5cbb5f5fda2bb61a93d3a7306c49dcb7/57038280542.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=definicion+de+varianza+de+una+variable+aleatoria+continua
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce93.bin
50e800e2f10b5d6e779c014f346eac9f4585996f082fe0eefbdd5157cba2e3d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE93 5084 bytes

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