MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed as a link farm, likely to redirect users to malicious content or phishing sites. The embedded JavaScript is a common method for initiating malicious actions within PDFs.
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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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 https://laborke.ru/uplcv?utm_term=parts+of+heart+with+label
- https://megashina24.ru/files/files/20958555168.pdf
- http://marta-galan.com/files/varios/file/fikemimepito.pdf
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/0rnuq06h8foaesbifku41th6p6/9099169678.pdf
- http://3t-t.com/User_File/UpFile/file/20210909164910_NzkyMDUwOTg0NDY=.pdf
- https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/e63c0ca215a04f99c68c292cbd1a3a33/71419316210.pdf
- http://hongdacable.com/d/files/29672586726.pdf
- http://soc-in.com/data/media/files/gezonet.pdf
- http://proxima-design.cz/files/file/jozetox.pdf
- https://hospvetcentral.pt/site/upload/file/90925794954.pdf
- https://dnmpaint.com/sdcc/images/file/4581961951.pdf
- http://ozkayalarlojistik.com/userfiles/file/juwiz.pdf
- http://www.sushmitamukherjee.com/fckimages/file/jodorikudijuni.pdf
- http://codefon.hu/js/ckfinder/userfiles/files/44180395728.pdf
- http://irina-beha.com/ckfinder/userfiles/files/76352779701.pdf
- http://bwc.lt/i/zavin.pdf
- http://kazuma.ru/ckfinder/userfiles/files/vefadigepubixowov.pdf
- http://uk-finansist.ru/userfiles/file/86559363859.pdf
- https://netcsemege.elelmiszer-hazhozszallitas.hu/ckfinder/userfiles/files/fujodewuxavopapivuzefil.pdf
- https://dellrein.ru/content/file/67114555645.pdf
- http://studiotecnicofrisoli.com/userfiles/files/rekaxefusejinorume.pdf
- http://geologocarmignani.com/userfiles/files/kevomidozorajof.pdf
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/161302e185e691---47679720589.pdf
- http://sushi-belovo.ru/files/72915572296.pdf
- 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_off0000b1d9.bin98024c3fca1cf15245af6f039ef5a5e68000a0182bcdacddee54219573bfbfa8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1D9 | 16992 bytes |
font_01_sfnt_off0000ddf1.bina4549c2beda8cca560b6ed9d71d52cc0facacb8737235e38c4aedad319ddcb8c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDF1 | 10432 bytes |
font_02_sfnt_off0000f5cb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5CB | 16792 bytes |
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