MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://archism.ru/uplcv?utm_term=factorization+of+algebraic+expressions+worksheets PDF link annotation
- https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/sjkjmnuspbgked1jfl87bp1n9l/lowusuxamadakoxiguduxozu.pdfIn PDF document text
- https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/9dcbbh66v6q8ka2lt5cqss55h2/bivikofi.pdfIn PDF document text
- http://begemot-rus.com/uploadfiles/file/2021060511494873499.pdfIn PDF document text
- https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/iujbse6f8vgkbq52138cg8ust1/7017818882.pdfIn PDF document text
- https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074242389867---12189477855.pdfIn PDF document text
- http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160be3bde1e3b1---88608532294.pdfIn PDF document text
- http://garantc.ru/userfiles/file/reporivanu.pdfIn PDF document text
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607812bc1d951---89718865212.pdfIn PDF document text
- https://ises.ca/phpsites/vertical_living/uploads/file/71984377926.pdfIn PDF document text
- https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/62c134065fbe6a63e22b1fb291fcfc81/mawitotiramoxovo.pdfIn PDF document text
- https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/16860ef6df4be9bea7a8a508d89b47bf/23586742656.pdfIn PDF document text
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/d295257fd2b35a205a2c2dc9b867ab54/wedudafopotabu.pdfIn PDF document text
- http://digifast.cz/userfiles/dedudogaxabetewubokofo.pdfIn PDF document text
- http://hemeringen.de/ckeditor_ablage/userfiles/files/53922522275.pdfIn PDF document text
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/0m29jo7jn2coc5q9svdsf73j74/fukunisakimanomevu.pdfIn PDF document text
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609e69833bccc---vajefulosarezotuzerifofen.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e7cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7CB | 5648 bytes |
SHA-256: ecf4de2fbb74c7325ebce48aa877d2e0d4550c84e3cd6a8bc958b3a575040d38 |
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font_01_sfnt_off0000fb1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB1B | 11276 bytes |
SHA-256: 8fdd6f60db3f56e5b75eefed7c1c41d5c80fd7bb951f6422633d31b262cd5d74 |
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