Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e89007e9ad5dbd3…

MALICIOUS

PDF

82.4 KB Created: 2021-09-05 04:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f59e0cc228721df4aad5b39c03a3487d SHA-1: 2ec7cd4ad4e0e893694dbe4dc1ee1a6ab0e2457f SHA-256: 3e89007e9ad5dbd3994f578a23ffbabf6ed48fc8bdf716d0a56f35ce786c08ca
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and a significant number of external URIs, many pointing to compromised WordPress sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, suggesting an attempt to obscure the final malicious destination. The embedded JavaScript likely facilitates the redirection or further payload delivery, contributing to a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pixomot.ru/uplcv?utm_term=prova+univesp+2017+pdf PDF link annotation
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab868aeb311---kadepunarizonovugumu.pdfIn PDF document text
    • https://zoldlaptop.hu/ckfinder/userfiles/files/xirivika.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/ffdcnblm9ene2vuacdp14qqhhi/zivolifogivedewefik.pdfIn PDF document text
    • http://becucci.it/userfiles/files/15498761162.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4d672cc4c---mopijabara.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/sejusoremeparubota.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/66d8e3cbd9d26948830f55e8883bbfea/ritanezikezozigiwud.pdfIn PDF document text
    • https://salvamontbihor.ro/app/webroot/files/userfiles/files/wonunurugikepatuvirapak.pdfIn PDF document text
    • https://berettyotv.hu/userfiles/files/zejevitukibazamisunumo.pdfIn PDF document text
    • http://ats-dz.com/userfiles/file/6830072496.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608692e0c371b---zowitabisujivaserakedafif.pdfIn PDF document text
    • http://sanitaerprofi.ch/fckeditor/editor/images/file/6749810933.pdfIn PDF document text
    • https://alicantea.centralcms.cloud/galeria/files/voxafumub.pdfIn PDF document text
    • http://kashima.cc/userfiles/file/vadede.pdfIn PDF document text
    • https://fontan-montag.ru/img/upload/zabotipulo.pdfIn PDF document text
    • http://mebell-city.ru/ckfinder/userfiles/files/tazusosopemekimipuko.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082b575d846b---14615024950.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/kimawinovozitutezimukuvug.pdfIn PDF document text
    • https://moraure.net/js/ckfinder/userfiles/files/labuterosusini.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c864c3412ff---91036250969.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a4972a0148a---fabirifo.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/acfdfcebad8aa59a1d4d6aa47a5e5487/94869405689.pdfIn PDF document text
    • http://cuborh.com/natelinhanew/js/ckfinder/userfiles/files/56463798365.pdfIn PDF document text
    • http://tabouligrill.com/ckfinder/userfiles/files/52557113754.pdfIn PDF document text
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/161a3c53f03d2da20d17c28e2cb371f4/58071094236.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_off0000dbb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB5 10856 bytes
SHA-256: cfed52759d3406c254e4b530ff1d20803a56b190330f8e681300de61f7438655
font_01_sfnt_off0000f506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF506 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D18 18404 bytes
SHA-256: c3ac2d2d9a20c8e4e1a3ea10ebc22886ed22f42545a7839d423c7b015a2823ac

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