Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7382320275f19c…

MALICIOUS

PDF

72.1 KB Created: 2021-06-07 15:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 28e1dd66e74ec31d688c375824b4f9a2 SHA-1: bceb0572cd5f5630451c4a4d51d355229383ba3c SHA-256: 0d7382320275f19c8a148eb93ff5a8027da1c1fb2812902d62b3d37869870da6
154 Risk Score

Malware Insights

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

This PDF file contains numerous links to external websites, many of which appear to be hosted on compromised WordPress installations. The 'utm_term' parameter in some URLs suggests a phishing or SEO manipulation tactic. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier's high score indicate malicious intent, likely to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7310

Heuristics 5

  • 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
  • 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://krisoc.ru/uplcv?utm_term=mini+militia+unlimited+bomb+old+version PDF link annotation
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d2e02e94d9---wubewojeji.pdfIn PDF document text
    • https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/n15jopiflfbabmgbglm8i9g51f/41057885771.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16198907057949.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160785f64e218d---metuxuwafizelatetuvuwagej.pdfIn PDF document text
    • http://metaglas.kr/userData/board/file/vigomipuj.pdfIn PDF document text
    • https://damsindia.org/admin/uploads/file/nizufipizitaj.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8839e78f6---feforafaruguk.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6f79d6d00---99108150439.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/ead7f34567c5e1c1540384f203dcecd6/vuzituwozunemogitoxetibi.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/6e85udskf8ie65ig8dbfdgoe51/pefewuvomaliriralexadosi.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608208ee5a12b---webevopatalutatosimimil.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608971767939b---jutisinifiwoj.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/c336b66467228a57732680f6f39285ac/buwobovabo.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/newewev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A6 5176 bytes
SHA-256: 5fffe509ebc2b6319e2a823cf1be0441c877f20e94af74e59745c0fcc73a0441
font_01_sfnt_off0000fa34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA34 10872 bytes
SHA-256: e4875cbd61b7abd559c9b544c42f9e3e123190c897af3e42e2cb45daf4943467

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