Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c64dfebc235b47e…

MALICIOUS

PDF

51.6 KB Created: 2021-07-10 10:28:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: b55a4b9123c94a4c5087e192a51df7aa SHA-1: 9a802e1070ef66d9f54123dbd39fa43191bd0ab5 SHA-256: 5c64dfebc235b47e74c6b2c54a4953c4895048d98dc85b8d323586ce4352f739
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which point to compromised WordPress sites and disposable hosting. The ML classifier and ClamAV detection indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and link farm behavior suggest it's designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8963

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://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/73c9d3e433d7f92fa1164f95ffb7893d/xujadefopixukifu.pdf In PDF document text
    • http://chanakyaaerospacedefence.com/userfiles/file/gataw.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d272d739a9---numefa.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc9ca3e70ea---95604350268.pdfIn PDF document text
    • http://hodori247.com/uploads/files/tozil.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e61aa89833d---21068886106.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d2678936a9---44682128266.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b212383d939---xibimubixikekawujatagexom.pdfIn PDF document text
    • http://picassogift.com/Uploadfiles/files/rajopokutuz.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609814c041f52---57046457014.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/fexezilufawovuwi.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/e1c8de3ae4a0292399f66c0f0738b283/xujuxelolevek.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/6ac5250ab83bdaf5e9edf462966b81e8/dagur.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/29492414336.pdfIn PDF document text
    • http://envigest.cz/upload/file/50990240295.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/85b24e06b8e009710a33c4974ae50280/xubuwazodo.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b054fd79b97---muxunudizof.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160bdd67878580---74228100739.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/segovoxu.pdfIn PDF document text
    • http://plncse.hu/php_data/file/viguduletogosaza.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c94dd00393---55813084765.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f1983c5aaf---tikakopebulo.pdfIn PDF document text
    • http://wenxuezj.com/images/File/68924879328.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160a809a2e1761---97230394321.pdfIn PDF document text
    • https://mongolia-volkslift.com/uploads/files/furiluxopuzokomozubow.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=youth+identity+power+the+chicano+movement+pdfPDF link annotation

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