MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external URIs, including one pointing to a raw IP address, indicating malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly support the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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://archism.ru/uplcv?utm_term=year+9+higher+maths+paper PDF link annotation
- http://termosystem.pl/userfiles/file/jomevizotabefupibizawe.pdfIn PDF document text
- http://boletos.luzservicos.com/ckfinder/userfiles/files/vudamoxozasagerat.pdfIn PDF document text
- http://alfonsoguiggiarchitetto.it/userfiles/files/15253014941.pdfIn PDF document text
- http://hefei.chinatupai.com/web/js/ckfinder/userfiles/files/vosajolepevalunekil.pdfIn PDF document text
- http://mackyz7automotive.com/js/upload/files/rulorezudu.pdfIn PDF document text
- https://konzolstudio.ro/uploaded_files/file/fezakirapenoraki.pdfIn PDF document text
- http://zxpgw.com/userfiles/file/96172147611.pdfIn PDF document text
- http://happyhanool.com/ckupload/files/43217387397.pdfIn PDF document text
- http://fence-alarm.com/userfiles/files/selubitodegojasupepogituf.pdfIn PDF document text
- http://dongzzang.com/userfiles/file///70162388309.pdfIn PDF document text
- https://baglab.pl/galeria/file/45114826150.pdfIn PDF document text
- http://nemdanangpho.com/uploads/2021-09-14/images/files/bunapomokabejojozitujesaz.pdfIn PDF document text
- https://wsbtitan.com/images/file/xatifubuwisilube.pdfIn PDF document text
- http://185.33.116.145/~acus01/upload/files/61428236817.pdfPDF link annotation
- http://chinajessie.com/seadata/data/uploads/img/file/163098982691.pdfIn PDF document text
- https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/2m907j07hbv7q1v3p2hn7font3/fuxifibosopesiwu.pdfIn PDF document text
- http://ptaki.info/imgekoprojekty/files/61989641726.pdfIn PDF document text
- https://rasathantrananotech.com/ckfinder/userfiles/files/xevexidobawipitobudoseza.pdfIn PDF document text
- http://marienoellebermond.com/img/uploaded/file/2790512311.pdfIn PDF document text
- http://mail.me.ntou.edu.tw/ckfinder/userfiles/files/20210912_113406.pdfIn PDF document text
- https://papiratisk.cz/soubory/vinixiz.pdfIn PDF document text
- http://kkc1.org/htdocs/cljr/data/files/96866087041.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_off0000c33c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC33C | 10580 bytes |
SHA-256: 79c0d70f0b7a80e48b24a44eed353a6d30a126704b9cb3b556975af6f95e5ef5 |
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font_01_sfnt_off0000db75.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB75 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f387.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF387 | 17332 bytes |
SHA-256: f25ac5509f4a364e7abfe03ec48f0d8eebfcb035e99983c500710e8048958bc3 |
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