MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071864b5f3e0---rirofodalaxomiji.pdf In PDF document text
- https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/5aatn0i9ioihf6ivj1eopjc6n0/18469575743.pdfIn PDF document text
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b89252e35c7---fulenoxu.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c63bad51bb1---64527173887.pdfIn PDF document text
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c84b77ba4a---dedurasojuvatiketanutel.pdfIn PDF document text
- http://canigrup.com/userfiles/file/46111223118.pdfIn PDF document text
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/21d2e50b236da374125bae7b7dcc6dca/61432204667.pdfIn PDF document text
- http://www.heksan.com.pl/file/3008275488.pdfIn PDF document text
- http://didocrosby.com/imagenes/file/23785726914.pdfIn PDF document text
- https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dcd96a71ef---6968021908.pdfIn PDF document text
- https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/afbad938d53e5ad6d055a9e41814fef8/sidebukiputami.pdfIn PDF document text
- http://toyteepee.com/uploadfiles/file/2106200936314442015vbhb1.pdfIn PDF document text
- http://kompletucetnictvi.cz/files/file/53052555577.pdfIn PDF document text
- http://caffepontoni.com/uploads/file/44714479611.pdfIn PDF document text
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/af8d10b45df2ab9d7c67e760d806cbfa/widerikemalofuv.pdfIn PDF document text
- http://mextro.de/upload/files/11859795521.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=assimil+francese+senza+sforzo+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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00014b60.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B60 | 6276 bytes |
SHA-256: 5a3075deeb3b739cf67a833573a9fe9a8e361e5963e4f0f427795fb559d88e24 |
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font_01_sfnt_off0001607a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1607A | 5340 bytes |
SHA-256: dd8f581eeb4c39e6767eec5c4c931e4f0d3fdb33877213067b317e75bc04603d |
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font_02_sfnt_off00017293.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17293 | 11616 bytes |
SHA-256: fb0de419e507b7dd9056585d054f916eb63c2c1a1a76247620e07a98a7c349d0 |
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