Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2c75d7aa8f2b60…

MALICIOUS

PDF

81.7 KB Created: 2021-08-19 10:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-16
MD5: fa6f6b6d9d98b4ea5e245bd1f4db982c SHA-1: 449290aad4921a291a26599ff094ce1fb96292b0 SHA-256: 0d2c75d7aa8f2b60d2d9a5aa54cbee378bce7acb75eef5f8b3b2d35210e24c04
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. The document functions as a link farm, directing users to numerous websites, many hosted on compromised WordPress installations or disposable domains, under the guise of providing movie content. The primary intent appears to be to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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://inwebjor.ru/uplcv?utm_term=ver+pelicula+completa+en+espa%C3%B1ol+annabelle+1 PDF link annotation
    • https://ikansambel.com/contents//files/58758989656.pdfIn PDF document text
    • http://agro-vostok.ru/userfiles/file/baxenopodilekalu.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/b39ce1df65cc262a417b038b986bf1f9/genebufen.pdfIn PDF document text
    • http://aggengr.com/uploads/CMS/file/45449409832.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/9d74556cfa4da4b3e4b2893cb5b60874/pemovudetewexenezegeraka.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7400bd55aa---biwotiferenolo.pdfIn PDF document text
    • http://kompletucetnictvi.cz/files/file/fenizaxixananevibube.pdfIn PDF document text
    • http://shsclassof1970.org/clients/872719/File/mezadifurexasokufe.pdfIn PDF document text
    • http://www.asap-recruitment.net/upload/file/88049705346.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160775d7a480ca---vosuzewujutanivo.pdfIn PDF document text
    • https://bestcaps99.com/ckfinder/userfiles/files/lokebisokotojod.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/012ff2bd0570b8c63bc63c021e8b91e4/26012080644.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/88e413e92163bd5f08bdfb8f8879cbc8/jivejuzidorafegel.pdfIn PDF document text
    • http://vincentpopetutoring.com/clients/d/dd/dd6b7bcf94cac99d3bed97cf8166637b/File/7236863947.pdfIn PDF document text
    • http://saga.diamonds/uploads/ckfinder/files/zedadidubozizakanazumo.pdfIn PDF document text
    • http://abarappresentanze.it/userfiles/files/73845320115.pdfIn PDF document text
    • http://barnesfamilyre-union.com/clients/52050/File/relotewotuvetexugode.pdfIn PDF document text
    • http://studiodebiaggi.eu/userfiles/files/30374983530.pdfIn PDF document text
    • http://alicekhenrylawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/negojidurejiw.pdfIn PDF document text
    • http://azstorestudio.com/uploads/files/xatolidokizovezina.pdfIn PDF document text
    • http://gsxr.hu/userfiles/file/21967704941.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/cunce406joq8utooh5uq9p8cb0/18219090798.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/ee796ec134d7537698200e4fbc826875/18671736366.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/29a4092bc1b7a5a78f73b6500c907786/69120687162.pdfIn PDF document text
    • http://centromp.it/userfiles/files/bedelob.pdfIn PDF document text
    • https://oriental-kitchens.com/userfiles/files/62126081423.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_off0000d750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD750 18296 bytes
SHA-256: 20270d991cab7e1510248d908ad96cdb7aa21dc1be8de63749e2a248f94884b1
font_01_sfnt_off000105ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105BA 11000 bytes
SHA-256: 8c159c4892250d7eb53624531039e2e5c2781fb394dd66532d7185d616147bb0
font_02_sfnt_off00011ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EDE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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