MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external PDF files hosted on potentially compromised or disposable domains. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics suggests an attempt to obscure the true malicious destination or leverage compromised infrastructure. No scripts were extracted, but the overall structure points to a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://zweefvlieg.net/userfiles/file/95090649179.pdf In PDF document text
- https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b9789af1e1---33359865824.pdfIn PDF document text
- https://derey.nl/app/webroot/files/userfiles/files/46080760032.pdfIn PDF document text
- http://thuonghieutoancau.vn/uploads/files/46950061699.pdfIn PDF document text
- http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a84356d61a4---87639733342.pdfIn PDF document text
- https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6c2ac4e34---wurufajokazo.pdfIn PDF document text
- http://thecreditcrisis.net/clients/73966/File/bowusunedikigexutumezalaw.pdfIn PDF document text
- https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce19e04fda---tesazof.pdfIn PDF document text
- http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5c2a0ada0---31129007073.pdfIn PDF document text
- https://magerp.org/upload/files/petebuloxaro.pdfIn PDF document text
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b841f75e6d7---vadavow.pdfIn PDF document text
- https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/96de6a2dca4e05e119d03144832fa773/59365744819.pdfIn PDF document text
- http://princeworldwide.com/multimedia/userfiles/file/98497733256.pdfIn PDF document text
- http://cnzhongkui.com/fckeditor/editor/filemanager/connectors/php/uploads/file/050327482714.pdfIn PDF document text
- http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/26qd3e24gfhvs1ii1813ektg44/dukiwowudovitom.pdfIn PDF document text
- https://basalyemek.com/ckfinder/userfiles/files/92033176732.pdfIn PDF document text
- https://comobrew.com/newsite/images/user_uploads/file/4173401036.pdfIn PDF document text
- https://b2cexpressdemo.com/userfiles/file/30296147666.pdfIn PDF document text
- http://www.hussco-steel.com/husscofiles/files/40046747883.pdfIn PDF document text
- https://paklya.su/design/img/upload/file/dediliremedowupozu.pdfIn PDF document text
- https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/st8mpkdbidgiv203hgonqaiqk5/gevelopisujuvoke.pdfIn PDF document text
- http://adabaskimerkezi.com/upload/file/robitawuveseg.pdfIn PDF document text
- https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/k9ttpfh1g5lt595jk6ect52u89/fibazugotazepewileromupa.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=calcification+of+appendixPDF 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_off0000fba8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBA8 | 10476 bytes |
SHA-256: 1ece3e8d1b1067bba1a7d564b6bcfef095c93d0306ef845c1ee7c0f2770bd7cd |
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font_01_sfnt_off00011396.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11396 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012ba8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BA8 | 17512 bytes |
SHA-256: 1c696750d3133bd2cd110b4d9565409c37ce93d4b310f88f0fb2741eb3b2e998 |
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