MALICIOUS
224
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a critical alert for requesting recovery secrets or private keys. It also contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a phishing or credential harvesting attempt. The ML classifier also assigned a high probability of maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 8
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Recovery secret / private key request critical SE_SECRET_RECOVERY_LUREDocument requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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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://archism.ru/uplcv?utm_term=bitvise+ssh+server+manual
- http://vp-dmsh.ru/admin/ckfinder/userfiles/files/38756916262.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5cf040cb0---xegot.pdf
- http://dui-antidote.com/images/userfiles/file/nenus.pdf
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/1hso8lj4jfenhm7apmq5hsh1e1/32078851143.pdf
- http://ozdoby-betonowe21.pl/Upload/file/29080112998.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/rs44iabaed15pe7r6e3r0cpma0/62468153510.pdf
- http://em-mould.com/ckfinder/userfiles/files/babanin.pdf
- https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/42a539245a087e3503df0e042e0680ee/mivapawezosux.pdf
- http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebf0ef3884---90108285161.pdf
- http://www.facyt.com.ar/ckfinder/userfiles/files/37216050763.pdf
- https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/21632368653.pdf
- https://cometsecurity.in/admin/userfiles/file/rikepupalilunofu.pdf
- https://spacio.hk/attachment/file/nuvuwulofujepodetisulino.pdf
- http://daieimotors.com/js/upload/files/keteritib.pdf
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b88b2afa54---55027267264.pdf
- https://eastmanllc.com/ckfinder/userfiles/files/89059008471.pdf
- https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/3ab4373ec014bb33c4231c21b137e0de/9840678832.pdf
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/55d701bb58c58128e1ee79f769e9f4e6/judirirabumugasukafonixa.pdf
- https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/daa4168b596d4ccd82ed77a26df27814/8723453114.pdf
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608d39732d2d5---963721437.pdf
- https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/120f7260a521ed32977b3394824ccd8a/gixuzilorogitabilewo.pdf
- https://locoffice.ru/userfiles/file/88384438016.pdf
- https://99shayari.in/userfiles/files/parafimadofotiwawonur.pdf
- http://yidaig.com/uploadfile/file/20210814235317.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_off0000e061.bin2e0fe86792a27448fb4f393cf0461e12287fd7d6a14853d704816fc4e1afb454 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE061 | 17664 bytes |
font_01_sfnt_off00010e3e.bin39f9b65b7bc110bf558c7b6b6eacd5208f9ae69149f105e6ef678d90807b165c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E3E | 10472 bytes |
font_02_sfnt_off000125e1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125E1 | 16792 bytes |
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