Malicious PDF — malware analysis report

Static analysis result for SHA-256 7971320668ff26ec…

MALICIOUS

PDF

86.2 KB Created: 2021-06-13 20:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 81006424414a95eb87aa15d5574a5207 SHA-1: f2962542b35a0a8cb00ac29a80c66a2b39b442ef SHA-256: 7971320668ff26ec6afc46c8e0a3d088dbd67a6e021d7780cb4f9ed863496b0b
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 compromised WordPress installations used for hosting malicious PDFs. The document body, though heavily obfuscated, suggests a lure related to search terms, likely to trick users into visiting these malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6899

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://archism.ru/uplcv?utm_term=pokemon+ruby+eevee+location PDF link annotation
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/bf4f83dc6dc18f5b35ed90e65a45db19/kevewizorojujin.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093ea853a18c---95642447017.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ab685fd34aaddd72fb4fa01e4a27ecab/7347725164.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607291e1c1615---welunesebemipuzuxat.pdfIn PDF document text
    • http://fittbike.hu/files/file/95366978352.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/i3v8t1su7uhpj1il476p6219oe/60215054719.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/e71823c10eb79f56edf48ba3471433a9/puvulurawusepemumonul.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/5f0ada0797a8396ff920a2619913c4d0/54398169221.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/dikoji.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098bbb47610a---xufodolemojutejif.pdfIn PDF document text
    • https://schmitz.cz/res/file/webuk.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/valusakidelusaxojakiw.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/a0e58433710e22110d45f497ce3bd137/12321798998.pdfIn PDF document text
    • http://korean-school.hu/hangul/userfiles/file/2619702557.pdfIn PDF document text
    • https://vestol.bg/files/file/43745429350.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/4238618159.pdfIn PDF document text
    • http://archiprojektai.lt/app/webroot/uploads/userfiles/files/rafitim.pdfIn PDF document text
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4461bee0d---zasovilenazubujudevorata.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_off000116fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116FB 5016 bytes
SHA-256: ab1727a893bc86c4e7cbf4f05a1e45fd7ceb408020ff6715616628e31f0f4e9b
font_01_sfnt_off000127f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127F5 11560 bytes
SHA-256: a271dbb69a32c478786de05bd7d915035a5a8b78e13e5b4a8162e9ad19b58afb

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