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 embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to potentially malicious sites. The ML classifier strongly indicates malicious intent, and the presence of compromised CMS links points towards a tactic of leveraging existing infrastructure for distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://pistant.ru/uplcv?utm_term=google+sign+in+apk+frp PDF link annotation
- http://edu-soft.ru/site/htmlimages/file/22431521878.pdfIn PDF document text
- https://www.karelo.com/uploads/File/55241419607.pdfIn PDF document text
- https://bczenekar.hu/files/file/24741149505.pdfIn PDF document text
- http://consulcongress.it/uploads/assets/file/19241885292.pdfIn PDF document text
- https://a-guskov.ru/uploads/files/32449821152.pdfIn PDF document text
- http://e-kva.ru/admin/ckfinder/userfiles/files/35837861915.pdfIn PDF document text
- https://pasarantogel.com/contents/files/89082216645.pdfIn PDF document text
- https://drjou-vc.com/upload/files/rasesemizevovufulubuj.pdfIn PDF document text
- http://aceonlinementors.com/userfiles/file/75298762610.pdfIn PDF document text
- https://autohausnschmidt.de/userfiles/file/gowebigoveled.pdfIn PDF document text
- https://akemi.ro/hirek/file/71166547705.pdfIn PDF document text
- https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/167d890257a9c399425ca0cc0d95e95b/8344247178.pdfIn PDF document text
- http://9262895.ru/ckfinder/userfiles/files/34621936702.pdfIn PDF document text
- https://rireenfrance.com/images/upload/files/kalegilarowenigejuvi.pdfIn PDF document text
- http://kevinmcallisterlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/72247585366.pdfIn PDF document text
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/161413a6897f94---figaxobed.pdfIn PDF document text
- http://jawarakreasi.com/file/pafej.pdfIn PDF document text
- http://thcsnguyenvanhuyen.hoaiduc.edu.vn/ckfinder/userfiles/files/soxesesinugevag.pdfIn PDF document text
- https://maribon.net/app/webroot/files/userfiles/files/rilubom.pdfIn PDF document text
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613bfa5fdc700---marukodudofikaribuxupemi.pdfIn PDF document text
- https://profession-your-dr.com/uploads/files/202109022304454217.pdfIn PDF document text
- http://danangsculpture.com/uploads/image/files/32769382462.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_off0000c5e2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5E2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ddf9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDF9 | 10564 bytes |
SHA-256: 01da407f25b78468153b2694e31a77eed36cf33e6b6491592ce9ec5f1a527ffb |
|||
font_02_sfnt_off0000f631.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF631 | 16400 bytes |
SHA-256: 8a8ff73a6d7fe3fbf0b40db6264c8fdcb703dac04f211a0beffd3ccf97eb0044 |
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