Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd5565855d5a093…

MALICIOUS

PDF

58.1 KB Created: 2021-09-17 14:17:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 0d764df75d2ef46ca451e6398b0976b3 SHA-1: 4fd395c054db45c7d066f938aac89cb3d7b2138c SHA-256: 0fd5565855d5a0938894b49fd1f341846e0626303bff460107dbc12393ab5944
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to multiple external URLs, many hosted on compromised CMS upload directories, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/161442ead785ac---jepoxajew.pdf In PDF document text
    • https://manorhair.com/uploads/files/202109150650233598.pdfIn PDF document text
    • http://wdnederland.nl/file/68235568819.pdfIn PDF document text
    • https://pmcp-avac.com/files/upload-ckfinder/files/fegenaxuzora.pdfIn PDF document text
    • http://designklasse.de/ckfinder/userfiles/files/58142171452.pdfIn PDF document text
    • https://299-45.com/CKEdit/upload/files/8300412335.pdfIn PDF document text
    • http://0-50.ru/userfiles/file/20485646091.pdfIn PDF document text
    • http://1666-3668.com/attach/userfiles/file/gamanenot.pdfIn PDF document text
    • http://dragoniresorts.com/userfiles/34418224143.pdfIn PDF document text
    • https://worldcastlive.com/userfiles/file/nofugi.pdfIn PDF document text
    • https://sklep-pinokio.pl/web/uploads/files/derusinemisugubow.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b905f5dd56---zedivolid.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/6ce8f378eadd7d0715a699afe0f9d82c/51439992149.pdfIn PDF document text
    • http://mizuho-co.net/file/ck/files/53775826804.pdfIn PDF document text
    • http://orsini-blasioli.it/userfiles/files/deruximilefu.pdfIn PDF document text
    • http://issaproject.com/app/views/panel/ckfinder/userfiles/files/685625697.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c8dd135e3e49fae687b56fa8e6aabd84/netorotutijipafilu.pdfIn PDF document text
    • https://olivierdaulte.com/ckfinder/userfiles/files/97588422065.pdfIn PDF document text
    • http://summitremodelinginc.com/userfiles/files/vababarebukepa.pdfIn PDF document text
    • https://cmoretv.com/userfiles/sarasib.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614030ee29417---12684030317.pdfIn PDF document text
    • http://anduong-nhatthanh.com/uploads/news_file/5328865809.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161342f051dc44---96563935580.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=watch+bitten+season+1+online+freePDF link annotation

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