MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised WordPress sites, suggesting a phishing or SEO spam campaign. The presence of external URIs and link farms on disposable hosting further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
Heuristics 6
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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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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://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/54gj3ta0io8icu6anj03g1ou77/2696899428.pdf
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/45b26ac494c713cd6b03e15a50938623/kafamawizirofamijow.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb4e755be4---bedafetajikagisinumiz.pdf
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098c13d3784c---xisalisazexawabedutixisub.pdf
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a3c94a4d5---3515016197.pdf
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6e5366b11---382272843.pdf
- http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/11ecc45b0754ba0ed88bbaa3705d3305/56483855241.pdf
- https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/r0gjq19dj56o7vhibe9p8j4oa6/perusukolajik.pdf
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/c85f806e203d389aa513c439ed7e4a87/bizekejeveje.pdf
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ad6ce6281e0---xutisewanozomusa.pdf
- http://andlupa.com/userfiles/file/nesixegigaxelitofotilaru.pdf
- https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/82eeee74f7097f5ae759c2c014282da6/13409901187.pdf
- http://brukbet.com/user_images/file/vavifosiv.pdf
- https://alternativecarrepair.com/userfiles/file/79491702011.pdf
- http://ifaistos.reality.gr/~triantaf/images/file/46181899377.pdf
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d7fc3a8fedc---85886743202.pdf
- https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/6c43f898c6bc2015645a197ab484f3bd/40068231529.pdf
- https://aplusadvance.com/naver_editor/data/file/2551089625.pdf
- https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/4a553c2eb68fce33796ac7bfb47677fe/munam.pdf
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b731201e884---wakogizifolotelate.pdf
- http://jamesirvinewedding.com/clients/f/f9/f947a18657f5d77a8fcd192ffd4ccf25/File/27831920135.pdf
- http://bestorkate.com/uploads/ckeditor/files/52979002068.pdf
- http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160acb5709d643---wijimatuzomob.pdf
- http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad1f54e97e8---2942871251.pdf
- https://arrayamed.com/userfiles/file/92894371628.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=convert+cubic+inches+to+cubic+yards
- 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_off0000cca6.bind0eb88e8b7b2c754e06b530f5ad8ec5969b029013169c4581ca946fcc8287b0c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCA6 | 10872 bytes |
font_01_sfnt_off0000e5cb.binf6eaf3217e9610a7442242be5d8267fb7e9acf2b3a4e1f80ad6d35d5ebc79283 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5CB | 16772 bytes |
font_02_sfnt_off00011161.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11161 | 16792 bytes |
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