Malicious PDF — malware analysis report

Static analysis result for SHA-256 7265c6b7226a95a7…

MALICIOUS

PDF

69.2 KB Created: 2021-08-30 07:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 98837fdbf8c1f8a4495f23ad001db602 SHA-1: 1462aec6d91224b3aa51ec8f1f83cc0cf16174cd SHA-256: 7265c6b7226a95a7f83f894e7dea609ec48a96fbb34574c1dc0357f416a3ee54
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The document body was unreadable, but the presence of numerous external links indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5841

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/b8a96666bf6b7974508846867c7cd5f4/mukixuraxufuzes.pdf In PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/961e33cfedfee19aa8337f90b65b514c/19470454389.pdfIn PDF document text
    • http://pincesorvarshop.hu/editor_up/liwonajub.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c2c98dbed---vemijedifivatapudetelixi.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb490cb9c9---mimem.pdfIn PDF document text
    • http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jipinesudegusewom.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/5529abb66ce6f4cd8d889bc5f94772ef/bobapavafefeb.pdfIn PDF document text
    • https://rajaunited.com/contents//files/3799472578.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1612c58079358c---modolivuxuw.pdfIn PDF document text
    • https://ancoraeducacion.com/images/84287971848.pdfIn PDF document text
    • http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202105111021271947.pdfIn PDF document text
    • http://www.santamyoga.be/images/file/vibogi.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16109a270dfe80---82253356842.pdfIn PDF document text
    • http://postelezmasivu-olomouc.cz/ckfinder/userfiles/files/66012460728.pdfIn PDF document text
    • http://sirmamedia.com/ckfinder/userfiles/files/5458672117.pdfIn PDF document text
    • https://gites-les-bardots.com/userfiles/file/wukuzibotubebij.pdfIn PDF document text
    • http://batiment-tunisie.com/userfiles/file/kadeg.pdfIn PDF document text
    • https://mimpishio1bet.com/contents//files/jojavovevunamo.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cae2e8c424---sigepiguta.pdfIn PDF document text
    • https://shevtsov-art.com/uploads/files/96643281233.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100973e152d7---70500221942.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/47236203460d91d1c927e0.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=climate+change+inspirational+quotesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA23 17792 bytes
SHA-256: 7146285001822c4fbaf34335c01fa67f2944518ebcf29c341cb1be3e3f59a28f
font_01_sfnt_off0000e75d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ff74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF74 11096 bytes
SHA-256: 906394eeb91da31d48d57bbdb4be3cbd4215d51a57f980ec65be99f74756ad56