MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file exhibits characteristics of a malicious document, including a malformed exploit stream and ML classifier flagging. It contains numerous external URIs, many of which are part of a link farm hosted on disposable domains, suggesting an attempt to direct users to potentially malicious content. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://coretry.ru/uplcv?utm_term=convert+6+feet+4+inches+to+meters PDF link annotation
- http://diencongnghiepvohoang.com/uploads/files/36792176559.pdfIn PDF document text
- https://www.delaneyllc.com/ckfinder/userfiles/files/36859523873.pdfIn PDF document text
- https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/5nvvoh64nakn1p785bldtktkk4/nelaval.pdfIn PDF document text
- http://baove24h.info/upload/files/jafukufeg.pdfIn PDF document text
- http://www.urbanwaterways.info/files/79759902456.pdfIn PDF document text
- https://pacpartner.net/images_client/imagesfile/37133059597.pdfIn PDF document text
- http://jinanxintiandi.com/userfiles/files/dogogibuzeju.pdfIn PDF document text
- http://shinhwacar.com/userData/board/file/15805188796.pdfIn PDF document text
- http://zh-huaxun.com/uploadfiles/files/wajebuwavetalowagoge.pdfIn PDF document text
- http://waycreon.net/bhaskar/yii/upload/files/pefurigud.pdfIn PDF document text
- http://goldmustang.ru/files/files/25880661987.pdfIn PDF document text
- https://grafconsulting.pl/Upload/file/53279603725.pdfIn PDF document text
- http://immobilieninvestors.com/userfiles/file/giberurozuv.pdfIn PDF document text
- http://langeline.com/ckeditor/upload/files/75291572235.pdfIn PDF document text
- https://soechi.net/userfiles/file/84229219475.pdfIn PDF document text
- http://jjw-led.com/userfiles/file/fuvilowa.pdfIn PDF document text
- http://assushop.com/userfiles/assushop.com/file/davebuwawawakafirarizubej.pdfIn PDF document text
- https://doanandieuduong295doson.vn/namthuan/images/news/files/fomozituzisidamefewe.pdfIn PDF document text
- http://herningbadintra.dk/app/webroot/upload/files/nakagakelewumiluserasag.pdfIn PDF document text
- https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/9082d1a75b46cee61ee84e390b84e2ff/80750606728.pdfIn PDF document text
- http://hanahana.vn/media/ftp/file/dekuwupukezogafuxarixali.pdfIn PDF document text
- https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/36107823988.pdfIn PDF document text
- https://torbay.ru/images/uploads/file/zukipev.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_off0000d246.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD246 | 17660 bytes |
SHA-256: 90f6b5021664940172a8d17da9bd1f4dc1cee1d59f08478272f928ebb4c590ae |
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font_01_sfnt_off0000feec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEEC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011703.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11703 | 10736 bytes |
SHA-256: bd37b448fbafbedf42eb57258b64b5fbddfd5ff1aa2acbb0bd5d21391d28d77e |
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