MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm hosted on compromised WordPress sites. While no executable scripts were extracted, the presence of numerous URLs, many pointing to compromised CMS uploads, suggests a phishing or redirection attempt. The PDF structure itself is complex, with duplicate object bodies, and the authoring application 'wkhtmltopdf' is sometimes used to generate malicious PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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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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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 https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/5a01a3655aff8387577a397f0a9bd4f7/sowoloxolupak.pdf In PDF document text
- http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/2743b6923be95db2b4b7f7156b4d6d87/60581065911.pdfIn PDF document text
- https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2f7edad845---48282642434.pdfIn PDF document text
- http://clingac.es/d/files/22940265650.pdfIn PDF document text
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160782d20f3b37---57349859019.pdfIn PDF document text
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac216564c6---zazubizemuxojam.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/5059ddf3237d56c91a609223fc7b7cbd/jaroxetuso.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9dbd7bda7---biweriresibamupajamodorus.pdfIn PDF document text
- https://rosycaffe.com/file/10398129591.pdfIn PDF document text
- https://altinhediyeler.com/calisma2/files/uploads/98259629374.pdfIn PDF document text
- http://rghsalumni.com/clients/82979/File/ludifimuxibefofakakurezu.pdfIn PDF document text
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081ba0d7c832---4418395991.pdfIn PDF document text
- http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/p6b3ngoouspgb15f53e00vdep5/25163535795.pdfIn PDF document text
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160787314dfc43---68991082807.pdfIn PDF document text
- https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/1oeoqfi0vs7egkfqqlbm3ecmi3/37240513203.pdfIn PDF document text
- https://eyetracking.pl/userfiles/file/67232485871.pdfIn PDF document text
- http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f89bb5acce---68271562448.pdfIn PDF document text
- https://eatorhours.org/e-bussiness/fckimages/file/pukubejinugufogidirapub.pdfIn PDF document text
- https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/bkapp3uttmimejnl9otqmnvcfb/37860802640.pdfIn PDF document text
- https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/5d20d8b07fab459b85ab1ad761ce6e15/bigulanevekowe.pdfIn PDF document text
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609aa39cc19f4---fobavitumadifodasasugabo.pdfIn PDF document text
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/e9df9b5e9b19d7c80dece95189c5132d/91892125991.pdfIn PDF document text
- http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bb56717fbbf---175179247.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=lcm+of+34+and+6PDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- 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_off0000c13b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC13B | 16272 bytes |
SHA-256: e4f623fc9e09f63d49eded913d349fcfc1e8229b7579d0234263cdbb00f0837b |
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font_01_sfnt_off0000eb76.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB76 | 10376 bytes |
SHA-256: e5a5ae2e0d5c4fe9441a92054a3348037068b7cdbcd7fc133baf4653f87902b4 |
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font_02_sfnt_off000102f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102F6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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