MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and a machine learning classifier, with critical and high severity heuristics firing. The presence of embedded JavaScript and a large number of external URIs, many pointing to disposable domains, strongly indicates a phishing or malware distribution attempt. The document body is heavily obfuscated and appears to be non-readable content generated by wkhtmltopdf, further suggesting it's not intended for direct user interaction but rather to host malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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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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://infrive.ru/uplcv?utm_term=sync+android+phone+to+ipad PDF link annotation
- https://eventpro-kontraktorpameran.com/uploaded/files/wusasazolojatigenovi.pdfIn PDF document text
- http://elmbbq.com/uploads/files/54483931617.pdfIn PDF document text
- http://culfordequestriancentre.org/UserFiles/file/tigenu.pdfIn PDF document text
- https://www.colegiodomus.com.br/js/ckfinder/userfiles/files/jisakigekizinuv.pdfIn PDF document text
- https://kolkatanagariksammelan.org/ckfinder/userfiles/files/8566739705.pdfIn PDF document text
- http://fiumaradelsossio.it/userfiles/files/46951706595.pdfIn PDF document text
- http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/winidivixiteramut.pdfIn PDF document text
- https://ezgoe.com/10005001208290177/ckfinder/userfiles/files/vawufetadebaw.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16139da77465f5---8151160102.pdfIn PDF document text
- http://hasyo.net/files/file/xebugujamovo.pdfIn PDF document text
- https://termofriz.rs/files/medixi.pdfIn PDF document text
- https://altonika.pro/files/fck/file/876908018.pdfIn PDF document text
- http://verzorgingsindex.nl/images/uploads/paxufewipigumudusutit.pdfIn PDF document text
- http://thaymanhinhlaptop.com/userfiles/file/vuduximeza.pdfIn PDF document text
- https://altonika.pro/files/fck/file/89707523248.pdfIn PDF document text
- http://chinahk-ip.com/chinahk_ip/html/files/editor/file/zosalegugaralinaluxode.pdfIn PDF document text
- https://taiwancy.com/app/webroot/userfiles/files/74924587816.pdfIn PDF document text
- https://www.kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/53700982555.pdfIn PDF document text
- https://firesystem.ro/imagini_ws/fogixizigumejubakika.pdfIn PDF document text
- http://boletos.luzservicos.com/ckfinder/userfiles/files/pixevebaxo.pdfIn PDF document text
- https://tarsiman.ee/files/file/kovibuwa.pdfIn PDF document text
- http://shengnabei.com/uploadfile/file///2021091219585121.pdfIn PDF document text
- http://grandwatergatehotel.com/upfile_hotel/files/kanaro.pdfIn PDF document text
- http://bbpcosmetics.com/admin/upFiles/2021-9/file/netup.pdfIn PDF document text
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161402df9e031e---52495591748.pdfIn PDF document text
- http://bangiyaparishadtoronto.ca/bpt/editor/uploadfiles/fobijununewuxugawebovixu.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_off0000ed00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED00 | 18224 bytes |
SHA-256: 7fe9b71c142ffb202a1bf83146153937f1076269f22c8514a29ab88336e7acf0 |
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font_01_sfnt_off00011c8d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C8D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000134a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x134A4 | 10584 bytes |
SHA-256: d3ad5af8ac5080da5bf6b1c7e16b44ea4368bab8d3748a1d158e0f6af8cf91a6 |
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