MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs, many pointing to PDF files on unknown domains, suggests a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating a tactic to obscure the true destination. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.
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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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 http://kapalishakti.com/ckfinder/userfiles/files/pukixekezifimina.pdf In PDF document text
- http://achwvs.love-mrt.com/upload/files/45339525037.pdfIn PDF document text
- http://onlinevay.com/upload/files/5261691517.pdfIn PDF document text
- http://abnicum.ru/files/file/84211159257.pdfIn PDF document text
- http://infinijewelry.com/userfiles/file/68372629825.pdfIn PDF document text
- http://www.galiantsolutions.com/emailimages/file/54648818986.pdfIn PDF document text
- https://campfun.myhost888.com/upload/ckeditor/files/pepaban.pdfIn PDF document text
- http://maquinandoysubastando.com/dleyes/admin/fotos/file/suxagunazasex.pdfIn PDF document text
- http://pajurioverslas.lt/ckfinder/userfiles/files/25833405528.pdfIn PDF document text
- https://alarrabnews.com/images/content/content/file/83746548471.pdfIn PDF document text
- http://hwayoung.kr/upfile/files/19805887451.pdfIn PDF document text
- http://macierz-grodziec.org/files/file/sakidomomuzuzanuvu.pdfIn PDF document text
- http://www.solarwindependence.com/ckfinder/userfiles/files/vakagoxunazez.pdfIn PDF document text
- http://garant-fond.ru/ckeditor/ckfinder/userfiles/Images/files/donafoladuzo.pdfIn PDF document text
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae50fb36d7---bavililenuku.pdfIn PDF document text
- http://thebeautyofdesign.nl/ckfinder/userfiles/files/xudamaxok.pdfIn PDF document text
- http://twfindia.in/userfiles/files/vopuwazigebadepalisabip.pdfIn PDF document text
- https://lotte-ppta.net/beta/assets/file/nesisu.pdfIn PDF document text
- http://baoveantam.info/upload/files/49360335712.pdfIn PDF document text
- https://keyseries.us/userfiles/file/zalexidinizenavita.pdfIn PDF document text
- http://xn--pr3b03lcdvwu9dpynqkc.com/DATA/file/20210919095458.pdfIn PDF document text
- http://xn--80aamwn.xn--p1ai/userfiles/file/76882685117.pdfIn PDF document text
- https://minhkygroup.com/luutru/files/68773743843.pdfIn PDF document text
- http://assytekservizi.com/userfiles/files/vojutu.pdfIn PDF document text
- http://spynet.gr/Administrator/uploads/userpics/OutPostImages/files/26367238147.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=google+package+installer+androidPDF link annotation
- 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_off0000e6bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6BB | 10820 bytes |
SHA-256: 8912e2634552eeb87490ef0daf0625a98d38655b438c8718f5e106f385eafca7 |
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font_01_sfnt_off0000ffac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFAC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000117be.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117BE | 17564 bytes |
SHA-256: 2bf5fa66a96cc3f21aa93773679ee3fe26900b747f8498863f1d5468390e026f |
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