MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS platforms. The presence of PDF_SEO_DISPOSABLE_LINK_FARM suggests an attempt to leverage search engine optimization for malicious redirection. No scripts were extracted, but the PDF structure itself facilitates the redirection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://medvor.ru/uplcv?utm_term=motorola+one+5g+root
- https://yomadesign.com/userfiles/Proj_Name/files/filunododazilufapovokul.pdf
- https://ckeditor.pamlskovnik.cz/ckfinder/userfiles/files/zipuwoxujemogufixawavafep.pdf
- http://phongkhamthienhoa.vn/images/files/25139393596.pdf
- https://mamo-tato.ro/userfiles/file/mifolakurebumujevifuxe.pdf
- https://fundacjanadzieja.com/images/wyswig_images/file/buvezekisejexuz.pdf
- https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16130cb9494fd6---fepuxogomizogeworoxewuwi.pdf
- http://njuhome.pl/ckfinder/userfiles/files/7355660317.pdf
- http://ulv-fogger.ru/d/files/kazaxajazepiguf.pdf
- http://mjengo.org/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/76122399703.pdf
- http://fruitsad.pl/images/file/2726017820.pdf
- http://cnex.cc/images/blog/file/42890055313.pdf
- https://soosekszer.hu/upload/files/57581369197.pdf
- http://nuitsdartistes.eu/images/file/61630542871.pdf
- http://888spirits.com/userfiles/file/86484416021.pdf
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613900532833c---99508778696.pdf
- http://refinerlink.com/userfiles/file/98567253583.pdf
- https://ibshospitals.com/userfiles/file/78003441100.pdf
- http://irths.com/upload_files/files/sevol.pdf
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131022ccedfe---wokadikafubi.pdf
- http://jenan.com/ckfinder/userfiles/files/53607963313.pdf
- https://southernwashpros.com/nbloom/fckuploads/file/80246118400.pdf
- https://stpatswatertown.org/ckfinder/userfiles/files/fiwilo.pdf
- http://lexprikson.com/admin/style/images/userfiles/file/48955053852.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_off0000c3cc.bin4dc9ba13fcbfa95f9ee55a3ec3d5d0fe670cd47097863d48deb9a7ebf284324f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC3CC | 17400 bytes |
font_01_sfnt_off0000f0d0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0D0 | 16792 bytes |
font_02_sfnt_off000108e7.binad55aff47b39fe1e21d25948ce8b0760a6297f915a7c90e91e349f6e59ee470d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108E7 | 10152 bytes |
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