MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains a link farm pointing to numerous compromised WordPress sites, which in turn host other PDF files. This suggests a multi-stage attack where the initial PDF serves as a lure to download further malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple links to potentially malicious PDFs on compromised infrastructure supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 5
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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://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/a568341f5b94c7cba548d34e55dd4841/zemedowesaxupajadigotibo.pdf In PDF document text
- http://classicalgardenfountains.com/uplds/file/pirejugu.pdfIn PDF document text
- https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/hgarifqh9cd68efk4u4titims2/33978758372.pdfIn PDF document text
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1609519aa89291---nemisuviniv.pdfIn PDF document text
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac04335023---gurisibubovedewulixu.pdfIn PDF document text
- https://irantruck.ir/data/file/1217782152.pdfIn PDF document text
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160e6631d0c81b---87984949855.pdfIn PDF document text
- http://capitaloffice.pl/fotki/file/lokovosigemera.pdfIn PDF document text
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160753bcf16688---fafunizezomodavabo.pdfIn PDF document text
- https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/cbe7e52a245772683f216dd9747276c1/90324721733.pdfIn PDF document text
- http://autoscuolapezzano.it/userfiles/files/zufavozewisixisabegavurud.pdfIn PDF document text
- http://polyalpan.hu/_user/file/sidov.pdfIn PDF document text
- http://slippersymposium.com/clients/875641/File/59548021016.pdfIn PDF document text
- https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/p8tksd45u8ecs37o1bktpbq7te/40865714298.pdfIn PDF document text
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/9bf11b2f3c4e9d63acd086cbee9efa3f/24602159083.pdfIn PDF document text
- https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084ec0964492---kivifizudixaxuzol.pdfIn PDF document text
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae26ac4749b---90573283253.pdfIn PDF document text
- https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/fn4r4ba7pp6facuh712b2rcmjk/17988695521.pdfIn PDF document text
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/6125a45174e047f0e330d59100355d84/sixanukovifenunul.pdfIn PDF document text
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16085b8e4297c6---rupanorugarumipebow.pdfIn PDF document text
- https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1560592b0---62546467855.pdfIn PDF document text
- https://decoveinvestment.com/userfiles/file/somekinofadedizataki.pdfIn PDF document text
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a19ef0a2a2c---88861286867.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=good+friday+related+bible+versesPDF 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_off0000eddb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDDB | 16788 bytes |
SHA-256: 83a9470f304e8d7b75020ab5dd66113c15cbf4b0eeb49173e1176d77cf00a050 |
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font_01_sfnt_off00011970.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11970 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013187.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13187 | 10604 bytes |
SHA-256: 8f40faf8b37315542c5e383cd09a5ec48c6b81cb80f5a845f026aaae39582a4b |
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