MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external URIs and links to compromised CMS upload storage, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The document body is unreadable, but the heuristic findings point to a malicious link distribution pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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=battle+isle+android PDF link annotation
- https://bhopalliteraturefestival.com/mpsdp/uploads/files/54208434720.pdfIn PDF document text
- https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/211035553f38f15a80b88c8a079ab66e/87507170005.pdfIn PDF document text
- https://nawaasha.org/userfiles/file/lidolukosogevex.pdfIn PDF document text
- http://titusauto.hu/kepek/file/28774975324.pdfIn PDF document text
- http://ozhelalikram.de/resimler/files/ginaxifot.pdfIn PDF document text
- http://greenhousehotel.vn/uploads/image/files/lazameraxozume.pdfIn PDF document text
- http://easytravel63.ru/ckfinder/userfiles/files/95633233870.pdfIn PDF document text
- http://upnbkk.com/file_media/file_image/file/11240349108.pdfIn PDF document text
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/djhmf6b1m9qbrejrdupca1hopg/76840879848.pdfIn PDF document text
- https://foodphotoshop.com/userfiles/files/vonomiwujunop.pdfIn PDF document text
- https://etcbt.com/userfiles/file/8133663949.pdfIn PDF document text
- http://www.astmalek.cz/obrazky/file/vanimewigetuw.pdfIn PDF document text
- http://www.dialog-seversk.ru/jsplugins/ckfinder/userfiles/files/24897191612.pdfIn PDF document text
- http://bookblog.kr/data/file/files/tiforow.pdfIn PDF document text
- https://pataniforum.com/admin/jquery/ckfinder/userfiles/files/52547302078.pdfIn PDF document text
- https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161417b4e4fea9---gerajivosogifuzotinigofoj.pdfIn PDF document text
- http://ecolservizinettuno.com/userfiles/files/zowowe.pdfIn PDF document text
- https://micsys.in/userfiles/file/dinubivas.pdfIn PDF document text
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b4ab4450aa---gerugexiradusufe.pdfIn PDF document text
- https://zahrek.com/userfiles/file/2929739910.pdfIn PDF document text
- http://med-os.com/user_upload/file/tegej.pdfIn PDF document text
- http://dorrstrechy.cz/UserFiles/File/47524083844.pdfIn PDF document text
- http://tuzvedo.hu/elemek/file/bobobu.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f03e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF03E | 10292 bytes |
SHA-256: 22a731cb39ceb6976f12981b3193a06bdf9363a7a13ed5c6c463377c545d261c |
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font_01_sfnt_off00010791.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10791 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011fa3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FA3 | 17344 bytes |
SHA-256: 6040b4d24211e07ab8aa80711dc920ed867f886015dfbcf000392af6421538d1 |
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