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, directing users to multiple compromised WordPress sites and disposable hosting domains. These links likely serve as a distribution point for phishing or further malware, aligning with spearphishing attachment tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://archism.ru/uplcv?utm_term=miscellaneous+kannada+meaning
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9756863abc---26847541899.pdf
- http://szpital-sulecin.pl/images/fckfiles/file/68283135324.pdf
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160992837a66cc---41370170142.pdf
- http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607877709b62b---80126197913.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a505e421d---85695984969.pdf
- http://adaviestransportltd.com/userfiles/file/tuxan.pdf
- https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d55a336866f---51137116299.pdf
- https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a34d9ad0c16---41972373834.pdf
- http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609b87c19cbc6---xuwube.pdf
- http://www.alex-vasilkov.ru/images/wisdom/file/26018633191.pdf
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608230121c3cc---dewumaperovameruvuzurobi.pdf
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/1736b62b6391ae03e362956121a419b5/topir.pdf
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e83b1d8347---42207456354.pdf
- https://akproauto.com/nbloom/fckuploads/file/vubalumivalarizez.pdf
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/a025a9d94eb67554b28abf61db8dbc15/pefugadabulimuvekigariwus.pdf
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/en5786rbc3j4i2aavhnbnsb1b9/lexurag.pdf
- http://werkkledingverkoop.nl/images/docman/files/fepuloxatidomufi.pdf
- http://siripanyalamphun.com/user_img/files/luvazetuzaxomupoko.pdf
- http://stroisvias.ru/userfiles/file/43968014724.pdf
- http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0c67510ca---78440312964.pdf
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/d4576be191633d7fbb81fdd36cbb5b46/fatakef.pdf
- http://sosnovgeo.ru/userfiles/file/zafitafulazopefe.pdf
- https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/6337bf06d5d40aafe7ef1785e6802853/73638723188.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_off0000ffe3.bine9bef6c22bece03b21d99b4c2fdc840ab72b664cffb0f7cf0f0bf4e35455d4d5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFE3 | 10700 bytes |
font_01_sfnt_off0001182c.bin2273307c0aca70f20e99bc959fbef8de2b10e6b497c8699957cda76324f40767 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1182C | 19864 bytes |
font_02_sfnt_off00014c24.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14C24 | 16792 bytes |
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