MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on disposable domains, indicating a link farm designed to redirect users. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may also be part of a multi-stage attack, potentially requiring a password to access a payload. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://crysiq.ru/uplcv?utm_term=the+yellow+wallpaper+full+text+pdf PDF link annotation
- https://xn--interpeas-r6a.es/upload/files/luxugagutotofoxog.pdfIn PDF document text
- https://butagallery.com/userfiles/files/gikugibepoduxo.pdfIn PDF document text
- http://cmtdental.com/upload/ckimg/files/bikosokipifikugukaleviwu.pdfIn PDF document text
- http://stroyvodservice.ru/upload/File/pavagabap.pdfIn PDF document text
- https://wfca-czech.cz/temp/userfiles/files/sagipe.pdfIn PDF document text
- http://rkenterprisesonline.com/FCKeditor/file/gesowirenidopixaju.pdfIn PDF document text
- http://albertf.madteam.net/ckfinder/userfiles/files/82507207535.pdfIn PDF document text
- http://vantaidongsaigon.com/uploads/files/30319369047.pdfIn PDF document text
- http://splhardware.com/UploadFile/file/2021090323241273499.pdfIn PDF document text
- https://kolkataangikar.org/ckfinder/userfiles/files/fudaduwewodapijib.pdfIn PDF document text
- http://lohoithaiduong.com/uploads/files/pagafitopixog.pdfIn PDF document text
- http://nguoiquangphianam.com/uploads/files/45891892395.pdfIn PDF document text
- https://akamercedes.com/images/uploads/files/ruguxumovajexurodesibozo.pdfIn PDF document text
- http://evo-models.com/uploads/userfiles/files/rotisilolisofem.pdfIn PDF document text
- http://gkz-crimea.ru/userfiles/file/xabonunevo.pdfIn PDF document text
- http://vstarmp.cn/upload/files/20210918_035616.pdfIn PDF document text
- https://ivantomanov.com/userfiles/file/5587738581.pdfIn PDF document text
- http://eko-inwest.eu/upload/file/kanataluku.pdfIn PDF document text
- http://red-persimmons.com/upfiles/editor/files/85447757479.pdfIn PDF document text
- http://etepi.pt/js/ckfinder/userfiles/files/diwijodazenakesosalafe.pdfIn PDF document text
- https://careerroots.net/ckfinder/userfiles/files/66068165964.pdfIn PDF document text
- http://goraku-sangyo.com/userfiles/file/bibosozexumafenefumesa.pdfIn PDF document text
- http://sdes.in/uploads/fogusibegazijipalawakewe.pdfIn PDF document text
- http://klawiatury-foliowe.pl/_data/file/63821118557.pdfIn PDF document text
- http://25630638.kad.tw/kads/ckfinder/userfiles/files/rapir.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_off0000e4f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4F6 | 17460 bytes |
SHA-256: ff323a234c4d0a1c4fe3fd7732f279427e54afc7314e10fa5162fd2aef94f184 |
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font_01_sfnt_off00011239.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11239 | 10596 bytes |
SHA-256: e26c845ab5dac959530c2ee242fe9da46d9e99e6fdcbe6dec2eaf106e8133c07 |
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font_02_sfnt_off00012ab6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AB6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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