MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript and numerous links to external websites. Several heuristics indicate these links point to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 8
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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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://nataliashishkina.com/userfiles/file/80843634636.pdf
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/d707c57529bed9aad1840c37969d5af6/68879779161.pdf
- https://topclassgreenery.nl/images/file/sezilogijodojoxadixeduk.pdf
- http://urbanelect.com/userfiles/file/runuwarujitejamupubububev.pdf
- http://dydlhx.com/upfiles/file///71575695613.pdf
- http://hzbmsj.com/images/upload/File/nosixe.pdf
- http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/14409812652.pdf
- https://fu-ko-property-agency.com/webroot/editor-uploads/files/fuduweto.pdf
- http://smolninskayahotel.com/userfiles/file/peremaweburorosuv.pdf
- https://www.casestilistas.es/ckfinder/userfiles/files/libodibuxififijivuzuw.pdf
- http://wernitznigg.at/files/xevajivewun.pdf
- http://lucidareemantenerepavimentifaidate.it/userfiles/files/vitinidagi.pdf
- http://birons.net/wp-content/plugins/super-forms/uploads/php/files/11f8980e70c1aafcd4bd7f638854eb42/virefebazifefarakazelut.pdf
- http://becucci.it/userfiles/files/15368673076.pdf
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/20c9fe677a482396c0537dad56626ef3/23691653962.pdf
- http://archiwum.wyryki.eu/admin/ckfinder/userfiles/files/kabavemokowajilozunufober.pdf
- http://skyrun-arser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/2109052038462125054hlk31.pdf
- http://goodtraefarm.com/ckupload/files/33459228271.pdf
- http://eortak.com/img/fck_temp/file/50129178531.pdf
- http://www.valathors.com/ckfinder/userfiles/files/xotanizem.pdf
- http://seanbittinger.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/37992083309.pdf
- http://pronobile.com/catalog/file/mukeratarikarevagi.pdf
- http://www.tm-africa.com/beta/public/uploads/cms_filescms_files/68975289929.pdf
- http://cnsgafgl.netsociality.com/upload/files/zunonawixofovedevupode.pdf
- http://sissonne.hu/editor_up/93472985094.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=hau+tu+get+free+robux
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ba5a.bin33d7f7bb00279539b14de098b195036228b3f4b70a6ea1f9af081e2aaea952dc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA5A | 21408 bytes |
font_01_sfnt_off0000f177.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF177 | 16792 bytes |
font_02_sfnt_off0001098e.bin72a9aaaae9fb9d81f25e0dc8a4d851d34293db9a5972b1214f2aa6f9554e8767 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1098E | 10312 bytes |
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