Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e972c98715baeb0…

MALICIOUS

PDF

92.9 KB Created: 2021-09-01 23:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 03387e471ffc26453e50bebe2957b74a SHA-1: 1b166538e59737eee09942bff86305919951ac16 SHA-256: 6e972c98715baeb093fc42bbfc773a17c5bb07c325d9c3ec03edcc7caa859b42
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The file's structure and URL patterns are consistent with a malicious PDF used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 6

  • 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
  • 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://ketchas.ru/uplcv?utm_term=into+the+abyss+5e PDF link annotation
    • http://kayamedbursa.com/userfiles/file/wupofome.pdfIn PDF document text
    • https://art-gallery.mn/uploads/files/regalejinewox.pdfIn PDF document text
    • http://associazionemillesogni.it/userfiles/files/41195360758.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071791803b1e---megag.pdfIn PDF document text
    • https://cleaner.pl/userfiles/file/sawilexef.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b3336fac6---87643463886.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/nsbvrubrdr8chl04eia6cavesf/35082287083.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160846fd014f9d---soxomaneru.pdfIn PDF document text
    • http://dnepropress.net/files/file/wijufidaxipitupamuketewud.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/25381867628.pdfIn PDF document text
    • http://fairfresh.net/assets/admin/ckeditorimage/files/lonupebawurisovizalerexa.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab9b2049c5a---49391779414.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/lezapederutim.pdfIn PDF document text
    • http://goodtraefarm.com/ckupload/files/jefibemirilej.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609d702ef3e8b---rifegoxadetavaziwof.pdfIn PDF document text
    • http://cerrutistudio.eu/userfiles/files/69108614427.pdfIn PDF document text
    • http://hzbmsj.net/images/upload/File/56424433080.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/d541c7202078caf102361ab80b5a9e05/zekakuvotevuwegevif.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/1ed0309c548672648d7102fb8935e9de/31474988539.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/41hmcp7enu7skl9tqh79d45j36/lozesazuvujafujavagevelo.pdfIn PDF document text
    • http://maynenkhiinverter.com/media/ftp/file/kixetakotazakuvurevojep.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160891dcff2832---vidor.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611a7fdba7568---58025837376.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/81m5pcgvmkdsq9apfujla6qbf5/73085014898.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_off0001048e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048E 10304 bytes
SHA-256: 048001cf7188e2ea1d7835ad297e7aba7f2e91787ebf65ce2e4d664e7c3e8657
font_01_sfnt_off00011bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BD5 18616 bytes
SHA-256: 61ad95d165667e000f102baaecdcbd37d9e5ffe7da09c04b7ae82ceb149548a6
font_02_sfnt_off00014c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C9A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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