Malicious PDF — malware analysis report

Static analysis result for SHA-256 23af29fad4c7006b…

MALICIOUS

PDF

79.5 KB Created: 2021-07-26 12:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 26b1366dde0a099dfe0cf2d9fbb31b80 SHA-1: 3b219b4181b278d52498f32917783ceaccbab293 SHA-256: 23af29fad4c7006b82248f1e20b74ff9b6446f388853ec28e8c95122b58921f4
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of links, many pointing to compromised WordPress sites, indicating a link farm designed to distribute malicious content or phish users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. The document body is heavily obfuscated and unreadable, providing no direct content clues.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4875

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1609a9aba82492---bulitowupigibuletedeseda.pdf In PDF document text
    • http://kimyasaldubeller.com/upload/ckfinder/files/17021939407.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e26f656e88a---80970022319.pdfIn PDF document text
    • http://sakem.org/userfiles/files/22300835687.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/er6f8rjod5jmd5srafp34tnd8t/fupapewomi.pdfIn PDF document text
    • https://bushregenerators.info/userfiles/files/6316058276.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/66174111574.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/qglcv5boi81u6mhop9djsfken3/85684494928.pdfIn PDF document text
    • http://leasingtowers.com/ckfinder/userfiles/files/21983923676.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/dv2sfs5drup1ndcucd6233sudb/zobozaxipex.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/76005194dbfb70248acb67688067300d/fegoxetakofir.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe32777886---11011582844.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d15e99c05f---43703826057.pdfIn PDF document text
    • https://piataafacerilor.ro/app/webroot/files/userfiles/files/27903864677.pdfIn PDF document text
    • https://gwynharmon.com/home/gwyn/public_html/ckfinder/userfiles/files/litobesajebosenufo.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608e562d43f12---62366465025.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/43la30188ho7eo5ujfta0afsou/19787385196.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/894256336.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160991ed39d61d---talikipukulubumoxukoxob.pdfIn PDF document text
    • http://fantasymusic.it/userfiles/files/45537633617.pdfIn PDF document text
    • http://sieuthibds.net/images/files/6329709308.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/4a5d96a502472ceef0b52c68f16b5da6/tobikewadabamesekopurej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=puratan+guru+granth+sahib+ji+pdf+downloadPDF link annotation

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

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