MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though partially corrupted, appears to be a lure related to an 'adding integers practice worksheet'. No scripts were extracted, but the presence of numerous URLs and the overall detection profile strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://krisoc.ru/uplcv?utm_term=adding+integers+practice+worksheet+pdf
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/0bd8b0dfcbf0487c16c920f62af0ed01/55615931266.pdf
- http://srihemkuntsahibfgp.org/hemkunt/userfiles/file/joroxetoxesege.pdf
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/e3j0pk7qm9ui1ro51b7oi26mmf/puwinal.pdf
- https://samarpanbharat.org/trila/userfiles/file/jemogusiwelunilibetiba.pdf
- https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/16070ba2aee480---71118625951.pdf
- https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/pseqga37r4c2t6f4qe46laie0l/46419902212.pdf
- https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/5um4jr44uelbt1mei12p5glivl/28163373416.pdf
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16079398430366---punuvobuzuw.pdf
- https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/6c02c04924c10f6e2f46478434d963ce/75201671716.pdf
- https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/d2c7dfab0f8f1be257dcb1957b0ee2ba/jasuwofozi.pdf
- https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/9f57addaf6c4d2e8e01a41c874b489a1/wekelafalulosozokutaj.pdf
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/j8dv2rdb2ldnu9nnf81uuulcvm/95919348533.pdf
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b265a0e62b---momenafukalor.pdf
- http://africanhairbraidingsalon.com/userfiles/file/juxevesib.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084c1edcbe79---pubuwiniwa.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d36a.binf08ad93145670c0df640d64013b131fc794c7c94125169e899c45638fa650ebf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD36A | 5528 bytes |
font_01_sfnt_off0000e649.binc3f766d991beeadf25b323f29722572261d79908ab44bd3e372c9139d20762d1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE649 | 10728 bytes |
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