Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee2352176826cfe…

MALICIOUS

PDF

75.8 KB Created: 2021-09-01 11:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 15f7fe0b2f22317e862a4282c16a47ee SHA-1: c0cb2b73215b56eaa4a3dc27771eebd2d4f18c2a SHA-256: 7ee2352176826cfecc34808b60735e5618207747225a241549bba8c146e63ef6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM heuristics indicates a deliberate effort to create a network of redirecting URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://nomylo.ru/uplcv?utm_term=prospective+tamil+meaning PDF link annotation
    • https://podereilmontaleo.it/writable/public/userfiles/file/risozefugulufuzewuzegi.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/tetojuxomamulamabuwula.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608672029926b---33616027053.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c037091084e---dowor.pdfIn PDF document text
    • http://sassyissy.com/survey/userfiles/files/10278694460.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/d698c3220cd4626c7ed9ae467bcc5602/72811044236.pdfIn PDF document text
    • http://bezagsecurity.cz/userfiles/26797596639.pdfIn PDF document text
    • http://www.chubsorn.com/file/files/vutaruxot.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/4a52a32a9aa00b90ffcc913bb1a7f9f1/dafonajedopapimevuk.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608948dd3b731---jifiku.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///xuzoji.pdfIn PDF document text
    • http://mistral-paints.cz/userfiles/files/fafuperuporexuwewa.pdfIn PDF document text
    • http://ghalemdi.com/userfiles/file/67277820887.pdfIn PDF document text
    • https://maxlinder.com/admin/assets/ckfinder/userfiles/files/42963999701.pdfIn PDF document text
    • http://crmrealty360degree.in/ci/userfiles/files/5391796641.pdfIn PDF document text
    • https://jaukiaplinka.lt/ckfinder/userfiles/files/nitelijitokakobigevetowe.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160af8253c3a90---wesil.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac6102a2dc---doxix.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609045d8043c1---pamomaludi.pdfIn PDF document text
    • https://hotellemaritime.com/hotel/upload/files/46710635157.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1610fc8b198b2f---85929184856.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/ls1u5bp9cchnk5hga7jm4jdjr1/88083096038.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/953285d5057cd88133a478f3b8a55954/nenemezek.pdfIn PDF document text
    • http://fourfoods.com/images/files/dakiresanurapim.pdfIn PDF document text
    • https://optimuselearningschool.com/learning/site/images/uploadfiles/24503923288.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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_off0000bf95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF95 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A7 19324 bytes
SHA-256: 98e3321d563eefcd6fde25e5b59926b42ba6b12b7514c4163f92144223c50d19
font_02_sfnt_off000108a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A9 10784 bytes
SHA-256: e6512185ff3551ac9b2b21422e813ad26b08236362ba1cd7749eeb3177d26351

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