MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute traffic to potentially malicious destinations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.
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 https://nomylo.ru/uplcv?utm_term=ejercicios+resueltos+de+redes+de+intercambiadores+de+calor
- http://abnicum.com/files/file/95830158647.pdf
- http://esangsok.com/upfile/files/33059255220.pdf
- http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac21929cec3---jalokebuberuv.pdf
- http://naturabliskociebie.pl/userfiles/file/pabakobij.pdf
- https://thaiahpa.com/flash/files/bomewuvuxajeneko.pdf
- https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/e21f8495857f0961ae35b6fe08b69b3c/38290955733.pdf
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a345c255981---tedemukuwujuto.pdf
- https://www.piramideidiomas.com/ckfinder/userfiles/files/88724449826.pdf
- http://asbufestival.com/uploads/FCK_files/file/54232052628.pdf
- http://e3edu.vn/public/ckfinder/core/connector/php/connector.phppublic/uploadsfiles/61587545597.pdf
- http://hairtransplantmangalore.com/uploaded_files/userfiles/files/sujili.pdf
- https://minhvuongthuphap.com/upload/ck/files/xuzepufimelujalasired.pdf
- http://sportnazona.bg/f/uploads/files/31797362072.pdf
- http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096e590583ed---31498149257.pdf
- http://www.darvidproperty.com/news/file/reguzigukinog.pdf
- https://mangonebike.com/uploads/file/91063785829.pdf
- https://belitour.ir/basefile/belitourir/files/tumizalaba.pdf
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfaaecb5a1a---wukolamap.pdf
- http://www.propper-droppers.nl/files/file/delalonatinexepuwufowenu.pdf
- https://klairtransport.com/uploads/files/84879628611.pdf
- http://pk.mo/userfiles/file/22580044536.pdf
- http://agro-vostok.ru/userfiles/file/nibil.pdf
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16070bfd772fb0---nukedutejamane.pdf
- http://4seasonstours.in/userfiles/file/74197842816.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d7f9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7F9 | 16792 bytes |
font_01_sfnt_off0000f00b.binee048339ba6f3f31b76c729f5ae525ca118b2c9a4bf5228ff2064072c402b3db |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF00B | 19304 bytes |
font_02_sfnt_off000121df.binb75fa93346cf808ca501616a01c1c29a67164e0d8c6f8a921884288396e77a99 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121DF | 10884 bytes |
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