MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://synerhu.ru/uplcv?utm_term=this+that+these+those+lesson+pdf PDF link annotation
- http://yuemeism.com/uploadfiles/files/pawejuriguvusapukabadugu.pdfIn PDF document text
- http://cnex.cc/images/blog//file/89095623295.pdfIn PDF document text
- http://www.anaja-inter.org/public/file/notipewasivotu.pdfIn PDF document text
- https://sudhirsachdevaclasses.com/ci/userfiles/files/julolubuxikotukejilemeput.pdfIn PDF document text
- http://cga82.com/admin/File/befopaxavogegapenoxi.pdfIn PDF document text
- https://panificiopasticceriabattaglia.it/file/40785128100.pdfIn PDF document text
- https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160813cc3eff0a---16990828685.pdfIn PDF document text
- https://www.saammohaseb.ir/wp-content/plugins/super-forms/uploads/php/files/aa427955304c7ccd76fa988e6f3847e7/80281022891.pdfIn PDF document text
- http://prinsart.ro/uploads/files/kabinesudopabofemabepisi.pdfIn PDF document text
- https://gyn-koe70.de/obrazky/file/wupenigozix.pdfIn PDF document text
- http://world-green-hope.com/uploads/files/49025304948.pdfIn PDF document text
- https://nguyenthelong.net/userfiles/files/84700415884.pdfIn PDF document text
- https://music-group-store.com/upload/files/47754760598.pdfIn PDF document text
- http://firegallery.ru/img/upload/kimaxopibefijivedetitudan.pdfIn PDF document text
- https://sokolzgierz.pl/web/uploads/files/98538342137.pdfIn PDF document text
- https://vieiras.pt/imagensprodutos/file/bezikitulomufidamupowana.pdfIn PDF document text
- http://mkngsp.ru/upload/files/7219238414.pdfIn PDF document text
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f27ce9c7a9---rufawego.pdfIn PDF document text
- http://pzhjintai.com/upload/files/54928142527.pdfIn PDF document text
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/07705696427e5ff1a5f5c5e02a69e096/lowupikedur.pdfIn PDF document text
- http://fairfresh.net/assets/admin/ckeditorimage/files/75187526101.pdfIn PDF document text
- http://hamdard.com/hamdard/app/webroot/img/ckfinder/userfiles/files/83278119155.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160d79821d8369---82529956035.pdfIn PDF document text
- http://jucal.es/images/file/25325126595.pdfIn 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://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_off0000d04f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD04F | 10456 bytes |
SHA-256: 71ba0101d8a5281f5f35998d3c966457a567bf57150d146aa6e2747303874430 |
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font_01_sfnt_off0000e7f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7F0 | 18040 bytes |
SHA-256: 4bbc2e0a202c88a83e873e32b9ae4ab982ddd088006d5bb7c4278fe572c1f41f |
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font_02_sfnt_off000116b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116B3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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