Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e2542f0a486fbc…

MALICIOUS

PDF

65.6 KB Created: 2021-06-17 23:25:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 34a76e5d68d41a2fee3f147b80fe36a7 SHA-1: 65122330a68264b01546c6dc2c017d1d5c915037 SHA-256: c9e2542f0a486fbcfa6779cf4f391485f0827c3da9b65b4dfb2bec5c359a660c
154 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ML models and ClamAV, indicating it's a phishing or trojan delivery mechanism. It contains a link farm pointing to various domains, likely for SEO poisoning to attract users searching for educational materials. The embedded URLs suggest the document's primary purpose is to redirect users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8377

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://nomylo.ru/uplcv?utm_term=sk+singh+accountancy+class+12+solutions+pdf+free+download PDF link annotation
    • http://bfr-bialapodlaska.pl/userfiles/file/tutaxusom.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/a0d4028a276f95c1626aa4d0993d6d29/jiganipigovizuluri.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4cbe542d2e---43770011154.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/9f50be25fc490ffd5fe4f0940d03e9c4/minus.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/0a83265b8e17e2197b2ce8fa3de09257/37123123124.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/737c420c0d355f16bb0fb26bd369d2bc/maxavesinuxure.pdfIn PDF document text
    • https://vivekanandbawwa.com/userfiles/file/vasojevomuv.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b38b554b2c---vidipagozir.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160862d1d70d72---munibijepizodaber.pdfIn PDF document text
    • https://apoiotelecom.com/imagens/img_fckeditor/file/17958802608.pdfIn PDF document text
    • http://pttaccounting.com/userfiles/files/81398283048.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/ecb85a129b62cc555333835937a55f04/pazaritoxunekawipex.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/ef212b1320407a503f13c9073b8f4351/vokiduxivu.pdfIn PDF document text
    • https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/bixujalesat.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1609e91ea59579---10325674771.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A5 5960 bytes
SHA-256: 0bbfb2ab57d991a5c3b84ec72ad7e067f52da8d9f8e911349b530251fa2f0815

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