MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URIs and link farm patterns, suggesting it is designed to redirect users to potentially malicious websites. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 6
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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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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=cute+words+beginning+with+d PDF link annotation
- http://z500.si/files/13835436633.pdfIn PDF document text
- https://fertilizergranulatorprice.com/d/files/24774816240.pdfIn PDF document text
- https://ms02bet.com/contents/files/dixor.pdfIn PDF document text
- http://felixefontesadvogados.com.br/ckfinder/userfiles/files/8470479701.pdfIn PDF document text
- https://nikolsbeauty.com/webroot/f/uploads/file/kesilabekijuperik.pdfIn PDF document text
- http://calisnt.com/uploads/files/27261017048.pdfIn PDF document text
- https://www.cygnusdvlp.in/nitdurgapur/uploads/editorUploads/userfiles/files/23863753064.pdfIn PDF document text
- http://qhchemicalsfeed.com/upload/files/11503141881.pdfIn PDF document text
- http://sunrui-ti.com/d/files/piwifotirajexobelo.pdfIn PDF document text
- https://www.libyamonitor.com/sites/all/libraries/ckfinder/userfiles/files/30225275857.pdfIn PDF document text
- http://royalrep.com/userfiles/files/7611662099.pdfIn PDF document text
- https://cardolf.ro/files/33962585126.pdfIn PDF document text
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144b105576ee---bukafiradolotizusobib.pdfIn PDF document text
- http://ip-golubev.ru/ckfinder/userfiles/files/38404467628.pdfIn PDF document text
- http://amidoux-peintures.com/ckfinder/userfiles/files/36051198788.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/06abdbfb0b9e1447375774de953c8ba3/56254740874.pdfIn PDF document text
- https://tidymoney.com/ckfinder/userfiles/files/20741665170.pdfIn PDF document text
- http://rbtyutj01.com/userfiles/files/wipibuvana.pdfIn PDF document text
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/a9eac7bcce8fb607b54a43bddb585f81/68588003231.pdfIn PDF document text
- https://dukra.sk/editor_uploads/files/98434419083.pdfIn PDF document text
- http://kimwendelldesign.com/ckfinder/userfiles/files/lalizitujutiv.pdfIn PDF document text
- http://elai.kz/upload/2021/09files/210910174637936661gb6mh.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_off0000d636.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD636 | 10676 bytes |
SHA-256: c25d8f8120d876b3d696edd3b492aa9e79e6dcc9fbea4afcc71774a84d57f10f |
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font_01_sfnt_off0000ee81.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE81 | 17672 bytes |
SHA-256: 0e61f4a8425178671cb037e4114e4a85b81f8179f28fb0edf76af638e0dd3d5a |
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font_02_sfnt_off00011c8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C8E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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