MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a link farm pointing to numerous compromised websites, many of which are hosted on disposable domains. This suggests a tactic to manipulate search engine results or distribute malicious content. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of a link farm on compromised CMS uploads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16104721b5d619---10491940250.pdf In PDF document text
- https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/7799fd95f6d7a2c8b55aa36e749d9953/sobiromituvesafovore.pdfIn PDF document text
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a9c23d0f39---60986540095.pdfIn PDF document text
- https://pasarangroup1.com/contents//files/xatawexoparisexa.pdfIn PDF document text
- http://ahdjcm.com/upload/files/77170872312.pdfIn PDF document text
- https://garnizone.com/userfiles/file/45649997239.pdfIn PDF document text
- http://esistore.de/userfiles/file/katubudovabaj.pdfIn PDF document text
- http://goldenbaycruisesagent.com/userfiles/file/57294676035.pdfIn PDF document text
- https://adsbudget.net/userfiles/file/91576399627.pdfIn PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/660572eb88870491f226e79b584ac9f4/39053706278.pdfIn PDF document text
- http://norilskgu.ru/userfiles/file/9939623292.pdfIn PDF document text
- http://elite-nails.pl/Upload/file/83291205731.pdfIn PDF document text
- http://winso.tw/userfiles/file/relinidovafuxazavifegiret.pdfIn PDF document text
- https://tselectromechanical.com/uploads/CKfiles/files/73494242347.pdfIn PDF document text
- http://gldbirdgel.com/user_img/files/xadibolijovu.pdfIn PDF document text
- https://mangonebike.com/uploads/file/katekerekiranevoworalage.pdfIn PDF document text
- http://tuanlongland.com/upload/files/79763858804.pdfIn PDF document text
- http://klassn.com/ckfinder/userfiles/files/nakapewu.pdfIn PDF document text
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611edc8e23271---33911413911.pdfIn PDF document text
- https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/2e9f30be41187290b992956121406c5e/13926830759.pdfIn PDF document text
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/4c00498a4f64add8f8313a7f51531895/kamob.pdfIn PDF document text
- https://mundolibre.cl/uploads/userfiles/files/fumepimewow.pdfIn PDF document text
- http://adabaskimerkezi.com/upload/file/50066528416.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=synthesis+of+nanoparticles+by+ball+milling+method+pdfPDF 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_off0000d82e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD82E | 17356 bytes |
SHA-256: 31e3ba2219f0ca8280c34fe85da8f045232bd245f7a2ba6cb5cf895c30166b2f |
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font_01_sfnt_off00010512.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10512 | 11396 bytes |
SHA-256: c962edfb2a3a6178d2b9419a447dbbe812ba3743728bd2425bff3a8bd209a8c1 |
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font_02_sfnt_off00011f5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F5A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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