MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities to download and execute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates the download of a second-stage payload from one of the provided URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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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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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 http://zjqzzx.com/uploadfile/file/2021091320054673499.pdf In PDF document text
- https://www.kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/kaxifojinomenubuk.pdfIn PDF document text
- http://reversetheclocknow.com/ckfinder/userfiles/files/tixunomorezoridepejur.pdfIn PDF document text
- http://hndgyl.com/v15/Upload/file/202197057475046.pdfIn PDF document text
- http://hotel-ambassador-nice.com/upload/files/35341839044.pdfIn PDF document text
- https://marblobathware.com/app/webroot/img/files/70069430539.pdfIn PDF document text
- http://ocean-ex.com/images/blog/file/pozovixo.pdfIn PDF document text
- http://machinegroup.ru/img/outer/files/fitiladereregosiga.pdfIn PDF document text
- https://davaocarrental.com/images/file/99272683724.pdfIn PDF document text
- http://www.huescalamagiaenfotos.com/userfiles/files/popeneputemudaropa.pdfIn PDF document text
- http://fabiocaronearchitetto.com/userfiles/files/74878452386.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161483c0cd44e4---gubixiwafizopasu.pdfIn PDF document text
- http://tercovci.cz/files/file/rureke.pdfIn PDF document text
- https://burkina-businessschool.com/business_school/uploads/file/jazoxexazilito.pdfIn PDF document text
- https://restaurant-kamkok.fr/img/Data/file/solalezojod.pdfIn PDF document text
- https://pushtypathshala.com/demo/aims/files/images/files/82649857173.pdfIn PDF document text
- https://hoangvan.vn/wp-content/uploads/files/60838084414.pdfIn PDF document text
- http://ajeah-intl.org/fck_image/file/xikaxurosiwol.pdfIn PDF document text
- http://geometrabottero.it/userfiles/files/80127092104.pdfIn PDF document text
- https://kitchensofdiablo.com/upload/file/7616592002.pdfIn PDF document text
- https://codecs.ro/images/file/miduzetivibakeko.pdfIn PDF document text
- https://handinhand-daycare.com/ckfinder/userfiles/files/11985859991.pdfIn PDF document text
- https://lomasdelaweb.com/userfiles/2008.09/file/31512202636.pdfIn PDF document text
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/8652ddf6ec25e80ec804fa2d8de5a8e2/libubuligopomopuju.pdfIn PDF document text
- http://www.thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/87102222855.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=don+t+whack+your+teacherPDF 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_off0000b27f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB27F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ca96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA96 | 10412 bytes |
SHA-256: dfe816a044a5df0a06000c9868f8844552f5c09c44eca31bded5fd0896eb9b02 |
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font_02_sfnt_off0000e23a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE23A | 16568 bytes |
SHA-256: 443cfa6fddbebc70708c3fd79dbb0945408ac1005db509206fbbc61e824013e6 |
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