MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The ML classifier strongly indicated maliciousness, and the PDF contains numerous links to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. No scripts were extracted, but the primary attack pattern involves directing users to external malicious resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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://synerhu.ru/uplcv?utm_term=how+to+use+instant+pot+vortex+plus+air+fryer PDF link annotation
- https://www.aicsmindia.org/ckfinder/userfiles/files/84762668217.pdfIn PDF document text
- http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/2i4drfbcu8ijrvam8jgu0cscl0/23536219318.pdfIn PDF document text
- http://nedirajtebosnu.net/userfiles/file/22730718906.pdfIn PDF document text
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b87c82491---womawudezenewukiwexagavo.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16097de68cfa5a---50356838900.pdfIn PDF document text
- https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/668b59015c905ddcf0f35082c1dac478/79110233040.pdfIn PDF document text
- https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/s46s62h1pv8bajk16botqrk028/84336573408.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160add323cc28c---22058457525.pdfIn PDF document text
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d5e6df72802---jomawedewisowu.pdfIn PDF document text
- https://doanhnghiepvietnam.org/img_duhoc/files/97199940552.pdfIn PDF document text
- http://alphasigmaoverseas.com/userfiles/file/revumunefijunolotu.pdfIn PDF document text
- https://clove7.com/userfiles/file/13023294652.pdfIn PDF document text
- https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/tr8t4tdeidmpsike241c33cbeo/65325014275.pdfIn PDF document text
- http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zumiwamikurexejal.pdfIn PDF document text
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609973645cc19---fabibagelarijibuvisiru.pdfIn PDF document text
- http://salsainkonstanz.de/media/files/44041626916.pdfIn PDF document text
- http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16094806b78761---zugisidusaxewisufojo.pdfIn PDF document text
- http://orsini-blasioli.it/userfiles/files/31130283119.pdfIn PDF document text
- http://rurisnet.org/images/file/81706090502.pdfIn PDF document text
- http://ithalattagarantibelgesi.com/resimlerfiles/96117736422.pdfIn PDF document text
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e5f1d833184.pdfIn PDF document text
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608926a770904---6694597783.pdfIn PDF document text
- 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_off0000f903.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF903 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001111a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1111A | 10808 bytes |
SHA-256: 1f6b728f573b638407daaf1b90fefd98f508423555abcae400a49cd2f9f0c925 |
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font_02_sfnt_off00012a3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A3A | 17476 bytes |
SHA-256: c57437abdc1e1e439747859f5b655f1f1b1c0ba2c3b7e36a7129c22ce1d41c11 |
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