MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document containing embedded JavaScript and multiple links to external PDF files hosted on disposable domains. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a strong attempt to redirect users to potentially malicious content. The ML classifier and ClamAV detection further confirm its malicious nature, likely serving as a downloader or part of a phishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 7
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://makassitools.com/userfiles/file///87762918822.pdf In PDF document text
- http://www.autodesguacecoin.com/ckfinder/userfiles/files/35794340767.pdfIn PDF document text
- http://novichiha.ru/pic/file/50177316221.pdfIn PDF document text
- http://riggi.ru/userfiles/file/soriwab.pdfIn PDF document text
- http://cellesekorea.com/ckupload/files/66146368583.pdfIn PDF document text
- http://klubalfa.org/img/userfiles/file/bujabonujojul.pdfIn PDF document text
- http://tobolsk.fluentrussia.ru/img/content/files/18594943659.pdfIn PDF document text
- http://3wsystems.com/shipinc/userfiles/files/37459092457.pdfIn PDF document text
- http://pileshoppen.dk/userfiles/file/tigoxipunamopiwivazire.pdfIn PDF document text
- https://texigo.tw/upfile/files/2021/09/16/woxijipovokirefifaj.pdfIn PDF document text
- http://locthanhroyal.com/upload/files/liribexegawoxexivuz.pdfIn PDF document text
- http://tivatijapan.com/uploads/userfiles/file/63532418083.pdfIn PDF document text
- https://forexinc.ca/upload/editor/file/56517579284.pdfIn PDF document text
- https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/c3f964339228543ebd5d7dc8e4504bdb/73132304660.pdfIn PDF document text
- http://wsp.pl/userfiles/file/42269612470.pdfIn PDF document text
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/f4749011dcd77e87f0c0f08f1a0723ea/16097894196.pdfIn PDF document text
- http://ingatlantv.tv/userfiles/files/89906448842.pdfIn PDF document text
- http://mackyz7automotive.com/js/upload/files/37711886192.pdfIn PDF document text
- http://ventilatoryzlin.cz/images/file/dipafibavugaxuji.pdfIn PDF document text
- http://carraracucinecomponibilitrapani.it/userfiles/files/85249156839.pdfIn PDF document text
- https://www.cdsale.org.au/application/third_party/ckfinder/userfiles/files/1006973750.pdfIn PDF document text
- https://tempatpasang.com/contents/files/59171015115.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=kasama+in+englishPDF 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_off0000b70f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB70F | 19828 bytes |
SHA-256: f545089675d8836144f7302c50515fe7988cc560df8cd0a88c31602119b8954e |
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font_01_sfnt_off0000eb01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB01 | 10228 bytes |
SHA-256: b1bd2914a42210283ec5802c793073190329a2704ad7c642f4092e4db31f2878 |
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font_02_sfnt_off000101ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101AD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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