MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on disposable domains and utilize UTM parameters, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://wastran.ru/uplcv?utm_term=back+app+apk PDF link annotation
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161462c3fbf3f4---fibalajewinebavi.pdfIn PDF document text
- https://fasaac.org/temp/files/govikimabowoxon.pdfIn PDF document text
- http://pscemetery.com/userfiles/file/xepixovujesetupaxawono.pdfIn PDF document text
- http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/1930421502.pdfIn PDF document text
- http://aviapartner.biz/js/ckfinder/userfiles/files/17097208883.pdfIn PDF document text
- https://sinarlangit1.com/contents/files/gafitafajenugodulal.pdfIn PDF document text
- http://viettelhaiphong.me/data/dulieu/files/guvupopazumexaru.pdfIn PDF document text
- https://mpksieradz.pl/upload/file/92160124420.pdfIn PDF document text
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614226baeae63---pobeliju.pdfIn PDF document text
- http://ros-audit.com/i/up/file/16525954038.pdfIn PDF document text
- http://aygroupmuh.com/image/files/vawesukeno.pdfIn PDF document text
- http://myshiou.com/uploads/files/202109171700283673.pdfIn PDF document text
- http://yearbookplus.com/uploads/ckfinder/files/jenixunujavanisixobu.pdfIn PDF document text
- http://xn--9w3b270a7kf.kr/ckfinder/userfiles/files/72636932372.pdfIn PDF document text
- https://study-abroad-travel.com/ckfinder/userfiles/file/kituragubokun.pdfIn PDF document text
- https://oazapiekna.com/zdjecia/fck/file/25239350897.pdfIn PDF document text
- http://klusjesindex.nl/images/uploads/bibofororoxatodifesuderow.pdfIn PDF document text
- http://palyavalaszto.hu/teszt/upload/file/74348811088.pdfIn PDF document text
- http://gemaeldeundobjekte.de/uploads/files/tugufojajeranusi.pdfIn PDF document text
- https://tepatsasaran.com/contents/files/wuzoleniwodinejewazo.pdfIn PDF document text
- http://kunbot.com/upload/files/fudidume.pdfIn PDF document text
- http://palazzodiaz.com/userfiles/files/gufiduboxegenokudis.pdfIn PDF document text
- http://gomsuhoangminh.com/app/webroot/uploads/files/vedebemexezororuf.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_off0000bf2a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF2A | 17484 bytes |
SHA-256: 40c91e981e91bc27a54f679e0fce8651d7e66876f3ac5f4b90deeb9dad3d9f64 |
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font_01_sfnt_off0000ec98.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC98 | 9652 bytes |
SHA-256: e4107682160381581a253e8d7c46cfcd9aa341687bb01dc1a860b44df1d9db65 |
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font_02_sfnt_off000101b9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101B9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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