MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm hosted on multiple compromised websites, suggesting an attempt to obscure the ultimate destination and evade detection. The presence of numerous external URIs and link farm heuristics points towards a phishing or redirection scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16086950acf671---42238276081.pdf In PDF document text
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/7a941b48e7e061b88196018a4ae70abd/10480398512.pdfIn PDF document text
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3e1648ded---vivufemineroneninovo.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/hj8h3vc9vjk1mo99e8nskj0636/ligitutagaraj.pdfIn PDF document text
- http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e0b7eb981a0---30857945943.pdfIn PDF document text
- http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/99978362211.pdfIn PDF document text
- http://bestapp4u.com/admin/uploadedfiles/file/40527102627.pdfIn PDF document text
- http://fotobambagiotti.it/userfiles/files/41207098044.pdfIn PDF document text
- http://susasoft.com/upload/userfiles/files/rulitojugimidive.pdfIn PDF document text
- https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb4c727276---minosizadeko.pdfIn PDF document text
- https://fong-cai.com/upload/files/fixasakesiwopijik.pdfIn PDF document text
- http://hiroshima-teishaku.com/userfiles/file/sasazegoz.pdfIn PDF document text
- http://vansuloi.com/uploads/userfiles/file/61743295478.pdfIn PDF document text
- http://bioscipublisher.com/files/upfiles/file/17321738682.pdfIn PDF document text
- http://mg001.cn/upload_fck/file/2021-7-26/20210726023810925786.pdfIn PDF document text
- https://wic-net.com/userfiles/file/25872984920.pdfIn PDF document text
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a79835b0d5b---18613460845.pdfIn PDF document text
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ee265691e6d---soxixunikapufokokenige.pdfIn PDF document text
- http://zatexpress.com//upload/userfiles/files/penamom.pdfIn PDF document text
- https://encoregallery.us/wp-content/plugins/super-forms/uploads/php/files/7626441e5d087d47be7a1e98398dc503/juzapuwadilarumuje.pdfIn PDF document text
- https://tongdaidoanhnghiep.com/app/webroot/upload/files/62237090355.pdfIn PDF document text
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3a2858444---donowefogelawar.pdfIn PDF document text
- http://hifimarkt.eu/kunden/kronhardt/ckfinder/userfiles/files/34052412069.pdfIn PDF document text
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a64d7c0c60b---37644868914.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+reduce+file+size+in+indesignPDF 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_off0000ea2d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA2D | 17804 bytes |
SHA-256: 528db1a8b7d1d076d0664e801d9b44bd8bfe9f32df13078e223069ca03cab747 |
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font_01_sfnt_off0001182c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1182C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013043.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13043 | 10728 bytes |
SHA-256: c8a3e64532924e6f2607c7491d2d49650d709cc8dc61bcd6adab2d183f3b06a8 |
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