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 0.9996
Heuristics 7
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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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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 https://inwebjor.ru/uplcv?utm_term=how+to+combine+3+pdf PDF link annotation
- http://apluskleaning.com/admin/images/file/gadolog.pdfIn PDF document text
- http://aucoindeshalles.fr/menu/file/puxubesato.pdfIn PDF document text
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16076a414c4bfc---raxazezatoloforovuvubaj.pdfIn PDF document text
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f3e49be8f7---viguwisum.pdfIn PDF document text
- http://szkolaprzybranowo.pl/ckfinder/userfiles/files/lomepevepe.pdfIn PDF document text
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f32fb97d02---kimowu.pdfIn PDF document text
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b290a103975---21974061195.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/6658438451.pdfIn PDF document text
- https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/muivk8vu2qsmr0ttr76igo5vq2/83266236403.pdfIn PDF document text
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160cc2725ebc4e---wibixul.pdfIn PDF document text
- http://freehajjandumrah.com/admin/admin/uploadfiles/file/fegutab.pdfIn PDF document text
- https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/80301eb48d2e018fc1ad0d3288be55ad/sejiduzulepadojedekepez.pdfIn PDF document text
- https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/013959d46970749a57c00eb79fe13dad/48847136538.pdfIn PDF document text
- http://feach.ie/images/uploads/file/zezikukinoladanagodo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- 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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dc1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC1E | 2908 bytes |
SHA-256: 4b30a0fed08b2808df323138b643ab045e476dc220f884ee650337b6879f8d13 |
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font_01_sfnt_off0000e680.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE680 | 5144 bytes |
SHA-256: 9911ce353b2057302e8b899a903b824a96f41065a759ce85d7560abc83c9665f |
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font_02_sfnt_off0000f802.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF802 | 10936 bytes |
SHA-256: 48476d041e707d567550faa2509910e2135dcd715936091876f63c09b5db80ec |
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font_03_sfnt_off00011d6a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D6A | 16388 bytes |
SHA-256: 534e44c921e8acb9c8e993207df297c85ca6c672af4c6174c05b3ca24a170572 |
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