Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2ce19e04851214…

MALICIOUS

PDF

48.1 KB Created: 2021-09-12 23:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 19e7fdfb5216e8f53487bd4b10cf40b1 SHA-1: 77e5905da338cca7035591b6c057b192660cbc62 SHA-256: fc2ce19e04851214e868def824f7a4a06c51fb43c02713b0c75900defff665e6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple potentially compromised or disposable domains. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7126

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 https://khyatiinfotech.biz/ckfinder/userfiles/files/pefifobinorezudevutufuf.pdf In PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/rorigezitopepu.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1613276a8c6f97---dokolavekuwezuxejabaxawix.pdfIn PDF document text
    • https://bhavanarayanaswamy.org/userfiles/file/36089311217.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d8b33f1c85---jawipozubodopilolajiru.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/diborifikenisezudole.pdfIn PDF document text
    • http://satisfytech.com/ck/upload/files/majujovasakuvug.pdfIn PDF document text
    • http://viettranslators.com/webroot/img/files/13713950410.pdfIn PDF document text
    • http://pomelieagency.com/userfiles/files/52498242545.pdfIn PDF document text
    • http://donghozibistore.com/luutru/files/42386403118.pdfIn PDF document text
    • http://stonebreaker.at/sozedutudeke.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137d48197672---xukenenofazizibirev.pdfIn PDF document text
    • https://artesapanaderia.xyz/aym_image/files/3427520169.pdfIn PDF document text
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/vejugefuxamuvujen.pdfIn PDF document text
    • http://wpklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tidovokerevi.pdfIn PDF document text
    • https://banktapeunadana.com/tapeunadana/bank2/admin/userfiles/file/varatuveriwa.pdfIn PDF document text
    • https://kipass.fr/userfiles/file/69716278272.pdfIn PDF document text
    • http://playoz.com/ckfinder/userfiles/files/61639826604.pdfIn PDF document text
    • https://www.allduniv.ac.in/ckfinder/userfiles/files/taponag.pdfIn PDF document text
    • https://miraclechuppahs.com/userfiles/file/tovovo.pdfIn PDF document text
    • https://spacio.hk/attachment/file/folipulusex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=data+structures+and+algorithms+in+c%2B%2B+pdf+goodrichPDF link annotation

Related samples 8

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