Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9fb412014f30b4f…

MALICIOUS

PDF

80.0 KB Created: 2021-06-11 01:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d03a811bee754a7a74656bfc4df0fdf SHA-1: e353063f95b318e1628032c3dc29c3393c20c571 SHA-256: f9fb412014f30b4fbd21f5ef7dbde67396d75453b9458035d042b88738cabadb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which appear to be compromised WordPress installations used for hosting malicious files. The document body, though heavily obfuscated, suggests a lure related to downloading 'Bhagwat geeta gujarati pdf free download'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://huntic.ru/uplcv?utm_term=bhagwat+geeta+gujarati+pdf+free+download
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/eda0da9cc80ebdf97886927cb39f2625/jetufexavakulisa.pdf
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/kukoderamuraxe.pdf
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160766892cac73---74391945217.pdf
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6bff4679f---70645502892.pdf
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/60d0f91c6884cd0c5b11c34a946fee9b/40647034519.pdf
    • https://powermailer.in/userfiles/file/nirewezosexuke.pdf
    • http://ilturismoinitalia.it/userfiles/files/29404622241.pdf
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607084b1bcdcc---xekosojonuvunekene.pdf
    • http://applexin.com/ttpsea/files/file/95176849508.pdf
    • https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/372f5361a50b52e25823a1f6962c3931/dorabavemenupe.pdf
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/837bc0a22fc96d2c1764d86c43cfa8aa/89316643920.pdf
    • https://amblamy.ee/upload/file/gifobugaxu.pdf
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609d37ad7b50b---63882779745.pdf
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f4f999f2f---80885216656.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d97f.bin
3947b08365792dd321c5ef7c7f0ceb52c06bb6f59914db415049f1a702815e4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD97F 5224 bytes
font_01_sfnt_off0000eb57.bin
ffb1c617d181ccd9536e056bb0bb58b3c34ac189dc35401de00bef992e4ea6b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB57 10556 bytes
font_02_sfnt_off00010f8a.bin
461a1578f80084b2f2ca998a6e716936969cc9b33b2976d66eaaa57f6abee57a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F8A 16172 bytes
font_03_sfnt_off000124a7.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124A7 4324 bytes

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