MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of links, many pointing to compromised WordPress sites, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent. No scripts were extracted, and the document body was unreadable, so the primary evidence comes from the URL heuristics and the ML detection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 http://ledson.ru/upload_picture/17249994003.pdf In PDF document text
- https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/a1ee64cc17c887f212111e006cd86dc3/34489943773.pdfIn PDF document text
- http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078877a7cbaa---24680877504.pdfIn PDF document text
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160c347b02c443---14317443913.pdfIn PDF document text
- https://asiahijau.com/contents//files/27889367240.pdfIn PDF document text
- http://campcolefamilyreunion.com/clients/82065/File/21969976141.pdfIn PDF document text
- http://sunnysolutions.it/uploads/assets/file/kebupatiwugafafunupoxi.pdfIn PDF document text
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160be07dab7019---14068556021.pdfIn PDF document text
- http://ssaisarang.com/ckfinder/userfiles/files/80048768537.pdfIn PDF document text
- https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/ceh0h3bai7sj4f2bkqup28s73p/80574391757.pdfIn PDF document text
- https://bandai-k.com/userfiles/file/pivanagon.pdfIn PDF document text
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/82adb6dcba447d9f549915a9cbe56067/mudupifavavibadij.pdfIn PDF document text
- http://strojsteel.cz/webpagebuilder/ckfinder/userfiles/files/27267842997.pdfIn PDF document text
- https://aawyx.com/sites/default/imageuser/file/zubotugebakixobivazipil.pdfIn PDF document text
- https://vieclamday.com/userfiles/file/mesofewovexudaxeritu.pdfIn PDF document text
- http://cjandjunemillerfarm.com/clients/75830/File/60653275270.pdfIn PDF document text
- https://miaousland.fr/ckfinder/userfiles/files/bovafofonexen.pdfIn PDF document text
- http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/b2fe229a2d9da39b112383447392fe57/80063448637.pdfIn PDF document text
- https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5df89f1d6eb6ff7a3ec7ca778460fb2f/20929826649.pdfIn PDF document text
- https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/933e195aa228d8d2c5b7dd07381594c9/jebawesodivimiti.pdfIn PDF document text
- http://anhopphat.com/uploads/files/94867666230.pdfIn PDF document text
- http://orhs86reunion.com/clients/6/67/6744625166a0df26c7abb40948833271/File/xulodamoforuvelex.pdfIn PDF document text
- https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/3usir0s6vqe1l36amthhcp3e0q/gimadorupamop.pdfIn PDF document text
- http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e805f351a1b---5024564756.pdfIn PDF document text
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b09addc662f---risivuroko.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=us+student+visa+interview+questions+and+answers+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_off0001174b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1174B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00012f62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F62 | 10852 bytes |
SHA-256: 7bccd505ce29384fadb9f10f9e5724c81cd260c7734dd47ad8f8f7cc5ef0fe2b |
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font_02_sfnt_off00014872.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14872 | 17360 bytes |
SHA-256: 251bc7bd9918bcd91d9497da3cf2454759698797c40893ccf7afb7120c909adc |
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