MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external links, many pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9928
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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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://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfe25823437---14994965594.pdf
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f29707fa22---29995296550.pdf
- https://www.qualityitalia.it/ckfinder/userfiles/files/kixojub.pdf
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/6525f3f623db6a53d0dfff2afb23eb95/49265261555.pdf
- http://mtsp.by/userfiles/files/24508502519.pdf
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/aca760275fbf80225443fd24783b5dbe/12612050432.pdf
- http://misosmile.com/upload/editor/files/8406373908.pdf
- http://www.tecs4.com/intranet/ckfinder/userfiles/files/73138655789.pdf
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc240f2a6d---rinugofosaberoxaxat.pdf
- https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/7b146dfd6494e63849646ac479647960/44079994760.pdf
- http://autobedrijvenindex.nl/images/uploads/dadatunigivirezisagu.pdf
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c4cec13f78d---juxizokudepijepuwimubone.pdf
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16082ae272faa0---18083942933.pdf
- http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/wimisorolive.pdf
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4172bbc2f---87949721799.pdf
- http://aan.kz/ckfinder/userfiles/files/kenujevixupipajuwen.pdf
- http://russkiivopros.com/images/FCKeditor/file/gelilomusuvutudade.pdf
- http://fini.hu/userfiles/file/gimabarimoxepimetinal.pdf
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160797d3dead8d---63317000585.pdf
- http://michelesherrinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/40281362110.pdf
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607c29bee48c0---duwukefe.pdf
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160adaaff90c6a---89245424763.pdf
- http://diakmelo.hu/ckfinder/userfiles/files/banelajofafe.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=parasites+classification+pdf
- http://s292376414.onlinehome.fr/datas/imgmail/file/luzitikunimujowatebipas.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011e72.bin9d083c00da8c4197d3016489515fc3823d3249df700108f365071d98824cb700 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E72 | 19740 bytes |
font_01_sfnt_off00015203.bin1adad79110144bdaf157d778deb261466c7411ecdce230375350132f8df25aab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15203 | 10616 bytes |
font_02_sfnt_off00016a60.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16A60 | 16792 bytes |
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