MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised or disposable hosting, suggesting a phishing or malware distribution scheme. The PDF structure and embedded links are consistent with techniques used to lure users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://medvor.ru/uplcv?utm_term=math+worksheets+for+grade+1+comparing+numbers
- https://wfca-czech.cz/temp/userfiles/files/94058856964.pdf
- http://thingsantiquesla.com/userfiles/files/66691971779.pdf
- https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/r7ibm2hrlg0beobf7bp1buf766/40413900750.pdf
- http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/a88ff052bb408925301f045a7f9782f1/89877301783.pdf
- http://aliceinformaticasrl.com/user/pages/malus.pdf
- http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/bc5d4e70faaaf6301f219a0f09582871/34727929791.pdf
- http://imaginove.eu/data/Files/63493016295.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607824fe25190---bazidasikibefujapeb.pdf
- http://euro520.net/userfiles/file/1625075091923173535.pdf
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160f6e17b5fd6e---bedijuxezonidumerol.pdf
- https://healthmatters.me/userfiles/file/sexunew.pdf
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/9823143ed9b7404db3d69f81d68683af/fizoxamafowanazab.pdf
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074652824f88---zakusufevofijapuzujuse.pdf
- https://robert-zauer.cz/userfiles/file/92656609775.pdf
- https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb043bc241---juxobovurifukenag.pdf
- https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d6f9c963ed7---67768875360.pdf
- https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ed3beb068---vamiwabatipurare.pdf
- http://studiolauramoschini.it/userfiles/files/vonur.pdf
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/sr22c4ch1dgcg4ghs09riiop8v/49915118225.pdf
- https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/43ngac3eaje9opfjsmpr4emhp6/dizolupisipa.pdf
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/2b5b6a8eaaa0ced4350ecc7b3a55c3fe/13051172921.pdf
- https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/3a549a1b96521c5af68a428086112f22/25938829280.pdf
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607733c0797f8---gawufiderujubizadez.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_off0000d41e.binf810683781baedee575aaccf3d70388a7cd0448076c4de8c88dfc8472be34d87 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD41E | 16444 bytes |
font_01_sfnt_off0000fe33.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE33 | 16792 bytes |
font_02_sfnt_off0001164a.binc38a8180060c9234d73b32bbb11d1dbfac93ab9dc785b02155ac5f612b0d6bbe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1164A | 11484 bytes |
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