MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Numerous heuristics identified the document as a link farm, with many external URIs pointing to compromised WordPress upload directories. The embedded URLs suggest a phishing or malware distribution scheme, likely leveraging the compromised sites to host malicious content or redirect users to phishing pages.
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=amazing+mathematics+parallel+lines+cut+by+a+transversal
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f6d065fe0---40085521446.pdf
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160b26832e4b64---kigidepamasabaginev.pdf
- https://noddy.nu/images/file/lebukolosokusux.pdf
- https://thehero88vip.com/ckfinder/images_store/files/vupemejavod.pdf
- https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/8dbtp7vn9igiectn3lhg2vmki1/44869316130.pdf
- https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/1a61506f447752dccba6427e8c4e9591/mibosuwewebupowejid.pdf
- https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f265890a6---wewoximetedijuxuja.pdf
- http://emanuelmlevin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/5347116083.pdf
- http://thunderstar.cn/userfiles/file/20210626070432194292738.pdf
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607054ed1dfe0---69223570961.pdf
- http://fzcce.com/aimgs/uload/files/41831848263.pdf
- http://leaguengn.com/userfiles/file///wafitabimalepu.pdf
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/2b1ce6d294ba34bd84aa1bd93b360fa7/fokomikotovoferujife.pdf
- https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/9e005be7967b68ea35b59422b49c9d14/silopabuludalumovi.pdf
- http://illinoislivestock.org/userfiles/file/79756861198.pdf
- https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607871640e625---xurukiw.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e16019530---vejedapabute.pdf
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/fb8b8b91e0ee1c4a6d83a7c93fc056ff/xawere.pdf
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b97a2c79e29---30591588712.pdf
- http://altaprecision.com/userfiles/file/fofeganizalo.pdf
- http://westernstudioservice.com/admin/userfiles/file/fepisuxeparug.pdf
- http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/8e279af6a6950042594398306355b538/99088395761.pdf
- http://albatrossmrn.com/konadnew/userfiles/file/nuvusedokerugitez.pdf
- http://al-bandak.com/userfiles/file/22345039396.pdf
- https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/a8b9ee09365afca1bc95a464bbf68a8c/zoboja.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_off0000ed73.bin727e266fb525b9f8f501cf06238212571e7e96112b0d924fce8d8a46fe9aaa76 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED73 | 11160 bytes |
font_01_sfnt_off00010725.binb9dc7a09aa9705aad8150cad582a0a9efe639dae0c73373faeb2b31b47fa539e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10725 | 17864 bytes |
font_02_sfnt_off000135c4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135C4 | 16792 bytes |
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