MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript, which is a common technique for executing malicious code. The file also functions as a link farm, directing users to multiple compromised websites hosted on disposable domains. These factors, combined with ClamAV detection and ML classification, strongly indicate a malicious phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 7
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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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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://krisoc.ru/uplcv?utm_term=mouth+palate+definition
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/9rr81ib5jhm00hksgb50bqjic5/renenojisam.pdf
- http://arcdesantmarti.com/biocop/Images/images-editor/file/76887493421.pdf
- http://kcde.kr/userfiles/file/nexigezurebalexoluw.pdf
- https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/1b709b819205d00d35c353455e7ffd38/vogil.pdf
- https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/i0552olbmsae5eqft5at60bgtg/tifovudew.pdf
- https://stillwaiting.org/userfiles/file/xedabebitefomoxol.pdf
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/nghgoqqve2iju76cbk2ahrv5il/rinujidagafovuwusiziwos.pdf
- https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/7tq4afm7d8qs18paajdpj0rhth/37279613146.pdf
- https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607454ada21fb---58518213554.pdf
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608dacc92fb53---28448421981.pdf
- https://ceccarbotosani.ro/userfiles/file/43583390803.pdf
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//89432075032.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a91deddaf71---sojefir.pdf
- http://staractivecollection.com/resimler/site/files/zawesedejifikegowoko.pdf
- http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/ji6h0emhglf6hlgak2olorfdoq/sovix.pdf
- http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a5c947b11---nosofexadotulibusumiwuxu.pdf
- http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5e409aa222---64694900904.pdf
- https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/29413cf7148895a8e073f69d208b053c/90719540041.pdf
- https://soyana.de/js/ckfinder/userfiles/files/fapinemebowasuzize.pdf
- https://amrapalispot.com/userfiles/file/12816609736.pdf
- http://qzgj.cn/upload/file/jozinomitedufove.pdf
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd3ecececa---65409648611.pdf
- http://gemculture.com/userfiles/file/90691460169.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_off0000f046.bin6906ec995104c9d67dcc614848c3f6d0a0262c03246d76fa9b57ac7ad15ba26d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF046 | 10420 bytes |
font_01_sfnt_off000107c8.bin822ec8d6f7d901e7be90e26e65ccd3ac9ccdc784eb7bd790c9d92e8f964d058a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107C8 | 16944 bytes |
font_02_sfnt_off000133eb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133EB | 16792 bytes |
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