MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm with numerous URLs pointing to compromised WordPress sites and disposable hosting, indicating a likely attempt to redirect users to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link farm. No scripts were extracted, and the document body was unreadable binary data.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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://bmhs71.com/clients/c/c9/c97ff408e01126d63256cf68004d6641/File/jizewe.pdf In PDF document text
- http://rszm88.com/upfolder/e/files/20210819232538.pdfIn PDF document text
- https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/a01a3eafc9197817706339badce18de5/65198852901.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161354a7d74388---30009558415.pdfIn PDF document text
- http://mya1fc.com/files/ckuploads/files/89763859843.pdfIn PDF document text
- http://bukharageorgia.com/sites/default/files/file/46657948330.pdfIn PDF document text
- https://cosmopolitanhotel.eu/uploads/wysiwyg/files/38016687297.pdfIn PDF document text
- https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609cda1ae22c9---jibizikunubol.pdfIn PDF document text
- http://jiin-torng.com/uploadfiles/20210815164748.pdfIn PDF document text
- http://burragebrothers.net/demo/jolie/beta/userfiles/files/wekovumenukotujanenisabi.pdfIn PDF document text
- http://stensoproject.com/userfiles/files/2669683926.pdfIn PDF document text
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad95f4c725f---tarupunuw.pdfIn PDF document text
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afdb24a3e3c---59100657678.pdfIn PDF document text
- http://atenngo.com/admin/sites/site/documents/86587607592.pdfIn PDF document text
- http://sluchatka-shop.cz/files/upload/files/52770998331.pdfIn PDF document text
- http://casaperferiesantamariagoretti.com/writable/public/userfiles/file/sojoxixelifinurotud.pdfIn PDF document text
- http://wiskind.com/filespath/files/20210831130809.pdfIn PDF document text
- http://vds-construct.pl/userfiles/file/wozubekomosoja.pdfIn PDF document text
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba8ba4dddf8---56692390268.pdfIn PDF document text
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160969d73971c3---rijamejotixode.pdfIn PDF document text
- http://prosquash.by/data/romabutilud.pdfIn PDF document text
- https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/12966aa86e585f8d6ea861f79073b02c/fumijenenobi.pdfIn PDF document text
- https://xosobacninh.vn/webroot/img/files/vonewosexejinitibeno.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=c%C3%A1ch+c%E1%BA%AFt+b%E1%BB%8F+trang+trong+file+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_off0000d3fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3FD | 11508 bytes |
SHA-256: 343956bb1639fbe347d1e3d23588e38e05061f4270a2f45671a8c80e04ba6a87 |
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font_01_sfnt_off0000edc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDC1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000105d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105D3 | 28336 bytes |
SHA-256: 68366fbb447ebee5c4b27097d5802dca10defdae4a97d9c28a135c3b073a46a1 |
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