MALICIOUS
66
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a link farm, with multiple URLs pointing to other PDF files hosted on various domains. Several of these URLs are identified as being hosted on compromised CMS upload storage, suggesting a tactic to obscure the true origin or purpose of the links. The document's structure and the nature of the linked content indicate a likely attempt to manipulate search engine results or distribute further malicious payloads.
Machine Learning
- Nyx PDF Classifier suspicious score 0.3978
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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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://imagebrandstudio.com/userfiles/file/tudojavikogikimele.pdf In PDF document text
- http://lltsg.com/uploadfile/file///2021090204110555.pdfIn PDF document text
- http://itps-group.com/uploadfiles/file/tefuzijorisewenegurujuxe.pdfIn PDF document text
- https://quimicasorocolor.com.ve/ckfinder/userfiles/files/2799238779.pdfIn PDF document text
- https://jobtiara.com/files/files/7251496030.pdfIn PDF document text
- http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vuvipofivagorojumugabujo.pdfIn PDF document text
- http://osstemcardiotec.com/files/fckeditor/file/1971937648613fd2e603008.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/256da5f723b030ea890ec669c4a2b7d2/5529663874.pdfIn PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613e0a7e613d3---zejumamapatagigisuluzobik.pdfIn PDF document text
- https://tonitomov.com/picture/file/9507877313.pdfIn PDF document text
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ou156th0q6l2aoi3t3c8bbh4h3/ridesilavutebuxejulijojej.pdfIn PDF document text
- http://jiin-torng.com/uploadfiles/20210916032805.pdfIn PDF document text
- https://phucatgarment.com.vn/ckfinder/userfiles/files/89713466282.pdfIn PDF document text
- http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/1986126832.pdfIn PDF document text
- http://sakuragiramenandsushi.com/uploads/files/11085151636.pdfIn PDF document text
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1613e5e55da8d1---10123540329.pdfIn PDF document text
- http://osstemcardiotec.com/files/fckeditor/file/654203189613ff8e1eddba.pdfIn PDF document text
- http://emons-verlag.net/testarea/cwsCMSlight/media/files/41868348519.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613f6fd196d9e---37359945785.pdfIn PDF document text
- http://diakmelo.hu/ckfinder/userfiles/files/nenosokunovimub.pdfIn PDF document text
- http://graylegalservices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/89358062251.pdfIn PDF document text
- https://smwebtechnology.com/arishayurveda.com/userfiles/file/putodis.pdfIn PDF document text
- http://planet-for-events.de/userfiles/file/13060765793.pdfIn PDF document text
- http://hilimall.ae/uploads/files/27184662846.pdfIn PDF document text
- http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16139bc855a7ea---9119641486.pdfIn PDF document text
- https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/losazikusumetuloxeji.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=flash+tablet+androidPDF link annotation
- 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_off0000ee26.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE26 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001063d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1063D | 10460 bytes |
SHA-256: 70e2dc32d7b7f8a9add0bf944113bac4ef236faa89b393b10b3f845024609b08 |
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font_02_sfnt_off00011dd8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DD8 | 17804 bytes |
SHA-256: 62bf8d70b3a8b270ba6e7d099417a407e44a554b56b4cec0b2a9ed182b8d0543 |
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