MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, a common technique for executing malicious code. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely redirects to external URLs, as suggested by the PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics, which point to a link farm designed to host numerous PDFs on disposable domains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 https://auditorescr.com/ckfinder/userfiles/files/vutixumumapebabafeveg.pdf In PDF document text
- http://bytip.net/filespath/files/20210916133706.pdfIn PDF document text
- https://communitytreasures-co.ravebusiness.com/gbe/useruploads/blogs/files/puredilofefana.pdfIn PDF document text
- https://huuphongplastic.vn/uploads/images/files/97521088028.pdfIn PDF document text
- http://autofactory-jin.com/js/upload/files/20082581645.pdfIn PDF document text
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/c36cadd7271553af78ecfed2aa66b783/witetejebanosizoneve.pdfIn PDF document text
- http://goodslib.com/userfiles/files/98092254190.pdfIn PDF document text
- http://www.mediagrand.hu/data/editorfile/zudedanoketorizitu.pdfIn PDF document text
- http://helder-effect.nl/userfiles/file/sozaziwuvakawamijolema.pdfIn PDF document text
- https://cityface.cz/res/file/fabaxol.pdfIn PDF document text
- http://mycoapaisyl.com/webimages/files/70656868133.pdfIn PDF document text
- https://hoya.mobioptika.hr/UserFiles/file/doxizaneberenuvinuzawugux.pdfIn PDF document text
- http://yey.uw52.com/upload/files/logazagulefexejomajiku.pdfIn PDF document text
- https://ecotranslation.ca/upload/editor/file/pafunegexebazewudu.pdfIn PDF document text
- http://ladispensadicampagna.it/uploads/assets/file/munidixinixirizusabitopi.pdfIn PDF document text
- http://sb-78.ru/files/file/57147469532.pdfIn PDF document text
- http://www.tlo.ntou.edu.tw/ckfinder/userfiles/files/tefezux.pdfIn PDF document text
- http://dienmaythanglong.org/uploads/files/bugosexugum.pdfIn PDF document text
- http://biolabsrl.org/userfiles/files/5326416469.pdfIn PDF document text
- https://polymadeniyaglar.com/fckeditor/userfiles/file/89400025335.pdfIn PDF document text
- http://cartopack.be/Images/file/69926938608.pdfIn PDF document text
- http://mariautonoleggiomarsala.it/userfiles/files/fufiwefibube.pdfIn PDF document text
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1615f764c28bc7---94673887968.pdfIn PDF document text
- http://gzlmjx.com/data/home/bxu2343160066/htdocs/uploadfile/files/fusobixunenovivisikog.pdfIn PDF document text
- http://feedproxy.google.com/~r/MbOu/~3/TxADE9PCSUw/uplcv?utm_term=free+html5+templatesPDF 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_off0000b5a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB5A5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cdb7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDB7 | 14792 bytes |
SHA-256: 79b555d5d31f77c185238606140b6c4caa9bb5692e8b2756f6e11f9055fe270e |
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font_02_sfnt_off0000f2cc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2CC | 10312 bytes |
SHA-256: d1b82c3b19f0502135be2c9263549aeabfbf384d793f469a8db1ac73d238b670 |
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