MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to WordPress sites utilizing form upload plugins, indicating a link farm designed to distribute traffic. The ML classifier strongly flagged this PDF as malicious, and the presence of compromised CMS upload links further supports a malicious intent. While no scripts were extracted, the primary attack pattern involves directing users to external, potentially malicious, resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/5048670314a3748bcc27c555a69f47b8/1170318428.pdf In PDF document text
- https://subded.org/userfiles/file/rarigotovafutonimi.pdfIn PDF document text
- http://itkaufmann.com/images/fckimages/file/debemokisuxisuj.pdfIn PDF document text
- https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613078e5c400b---63590792542.pdfIn PDF document text
- http://ensky-chemical.com/upload/files/fedada.pdfIn PDF document text
- http://waxiangyuan.com/upload_fck/file/2021-9-19/20210919174315281318.pdfIn PDF document text
- https://archielectronics.com/userfiles/files/64066604659.pdfIn PDF document text
- http://sakesushilakehavasu.com/uploads/files/malofuf.pdfIn PDF document text
- https://megacook.pt/site/upload/file/90564374491.pdfIn PDF document text
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16155a484b5cd9---zolusawovijejo.pdfIn PDF document text
- http://nakloboucku.cz/uploaded/file/nejofufu.pdfIn PDF document text
- https://forexinc.ca/upload/editor/file/76681931422.pdfIn PDF document text
- http://foxadv.net/file/175904415.pdfIn PDF document text
- http://rovitek.com/userfiles/file/98798948145.pdfIn PDF document text
- https://dcimx.com/files/8721179520.pdfIn PDF document text
- http://golfproradost.cz/webpagebuilder/ckfinder/userfiles/files/78981414359.pdfIn PDF document text
- https://prevodi-plovdiv.com/userfiles/file/35208815062.pdfIn PDF document text
- http://local-minicab.com/survey/userfiles/files/61013030311.pdfIn PDF document text
- http://canavesiobruno-architetti.it/userfiles/files/vikosukef.pdfIn PDF document text
- http://ros.by/ckfinder/userfiles/files/91761625242.pdfIn PDF document text
- https://horacebatten.com/ckfinder/userfiles/files/38956875882.pdfIn PDF document text
- http://deliver.cueicha.com/assets/upload/files/35887717262.pdfIn PDF document text
- https://heuresromantiques.com/upload/files/jesofegekofitapigimi.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=tunnel+rush+unblocked+games+76PDF 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_off0000d88f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD88F | 16684 bytes |
SHA-256: 316ba54d0be4289063620a34ceaeceb88b96b98e342d41916eaf87a81b7c2713 |
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font_01_sfnt_off0001037f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1037F | 11140 bytes |
SHA-256: b426ca353fc17c30e2bc41407ad55b2b54ad157d969b52fff0013969f9bf5ed5 |
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font_02_sfnt_off00011d35.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D35 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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