MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised websites and disposable hosting, likely to distribute phishing content or malware. The presence of external URIs and link farm heuristics strongly suggests a spearphishing attachment attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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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 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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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://infrive.ru/uplcv?utm_term=number+series+questions+for+bank+exams
- http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0ce0a7221---81041785211.pdf
- https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/fvlsslgi787t1p7k2tueqnrur5/lagedisitivilozuja.pdf
- http://sghscsjamarai.org/guruhargobind/userfiles/file/metadodotegawemapinil.pdf
- https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/2a109a0evf6csm0o285b47vlcu/11492760842.pdf
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0128e21e84---46643581383.pdf
- https://k-newsletter.com/ckupload/files/mixalid.pdf
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/d1591e0f685b1eeb25622cbfdec9e5c9/donubilijadog.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096809ce80b5---nenipevatusobasi.pdf
- http://www.mearesandassociatesllc.com/siteuploads/editorimg/file/51904614179.pdf
- http://oreade-breche.fr/userfiles/file/misazegafinekepobokiropow.pdf
- http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16082d9ddf3b82---10812838606.pdf
- http://bestbelly.org/content/files/files/29755548120.pdf
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609fab75527d0---39792403131.pdf
- http://pwr-tech.ru/userfiles/file/30601043216.pdf
- http://phantasos.org/userfiles/file/51617983873.pdf
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/0937723fb5720107763edceae2729922/sebaxexujufi.pdf
- http://alnoorcity.com/userfiles/file/tivugivusetudo.pdf
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ec137b016---vefuxivis.pdf
- http://childhood-matters.com/clients/49507/File/34067297155.pdf
- https://chief-moving.com/editor_upload/file/37750119741.pdf
- https://comobrew.com/newsite/images/user_uploads/file/levobuzipivix.pdf
- http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/ff6a358ae0b065f4a07943c2012e6763/56702275458.pdf
- https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/uu1djm055sjq7te5or3lta3qjm/vopiwowopari.pdf
- https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/f86155fefcc6d4b16ef00f10bcb3d333/25992279602.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_off0000eea2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEA2 | 16792 bytes |
font_01_sfnt_off000106b4.bin88b5724b0e30446b3c285363d56345c66dd66b2f9ac10d20465e33ec18fd7aa8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106B4 | 17188 bytes |
font_02_sfnt_off00013365.binb04df6f9b7f069e899224eaee226128e1924b58ad28541b333418fbd0fe426e6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13365 | 10888 bytes |
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