MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a significant number of external URIs, many pointing to compromised WordPress sites. These links form a link farm designed to obscure the true destination, which is likely a malicious payload. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9939
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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Embedded URL info EMBEDDED_URLOne 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://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7c191c19c1---65808443482.pdf In PDF document text
- https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160745185c1c83---33759681885.pdfIn PDF document text
- http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a626255b639---wokasesogewuwujupufid.pdfIn PDF document text
- https://olympicwroclaw.pl/zdjecia/fck/file/45973068986.pdfIn PDF document text
- https://nnkcreations.com/userfiles/file/sokodewofa.pdfIn PDF document text
- http://seoulsquare.com/userfiles/file/bebakexevigasifirole.pdfIn PDF document text
- http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8a46561b9---kaxedijunifil.pdfIn PDF document text
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075934fb5800---timonuwererusoju.pdfIn PDF document text
- http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/jpioasfe4pp6vst3gqt2a61mf5/22265336530.pdfIn PDF document text
- http://lovellreunion.com/clients/4/42/420738e4954c29d3cfd02fdb1bc9139f/File/mozekazaneretiterisarovuw.pdfIn PDF document text
- http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e449e7d13---goraxamevoj.pdfIn PDF document text
- https://salvatoredivilio.it/userfiles/file/11245076224.pdfIn PDF document text
- http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/panevuweruzuw.pdfIn PDF document text
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfcc441f476---vulutesegotikifeges.pdfIn PDF document text
- http://arcdesantmarti.com/biocop/Images/images-editor/file/88182856980.pdfIn PDF document text
- http://thallo-food.hu/uploads/ckfinder/userfiles/files/83136997666.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6c483379f---gusevutaserejipiridufike.pdfIn PDF document text
- http://www.la-rocca.pl/app/webroot/files/files/22961400390.pdfIn PDF document text
- https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/adhbg52a6lnqqn49rkag63f6ku/jidonewijunesaz.pdfIn PDF document text
- https://majubesar.info/contents//files/95620141391.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=prednisone+and+foodPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011857.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11857 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001306e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1306E | 10204 bytes |
SHA-256: f3ffabad59b4f620c744f17bfec1cc0818797ef0dd63e6f40a3f64986ad05a38 |
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font_02_sfnt_off00014762.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14762 | 17348 bytes |
SHA-256: f15afb175add29adb31c0d3a8b780ed6289c56c55242eb7a3f2c0865bbafc387 |
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