MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution campaign. The presence of PDF-specific heuristics related to URI and link farms further supports this. No scripts were extracted, but the overall structure and URL patterns are consistent with a malicious PDF designed to redirect users to harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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=virtual+lab+the+cell+cycle+and+cancer+answers+pdf
- http://aligokdemir.com/resimler/files/94049567861.pdf
- http://ceramkgres.ru/userfiles/file/90042939957.pdf
- https://willmarareachamber.com/ckfinder/userfiles/files/wawokerafebefugan.pdf
- http://goreskyreunion.com/clients/b/ba/ba087d28c24afe6c5bc45fa062332e47/File/20304170453.pdf
- https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/259730b63c57c55184ac29c472b46e93/73623155354.pdf
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6819430ee---wibowuvowebedigineposasi.pdf
- http://pengyou-english.com/FileData/ckfinder/files/20210728_CD8D328613FCE571.pdf
- http://capital96.com/userfiles/file/66022428889.pdf
- http://arniestribu.com/campannas/file/96509618009.pdf
- http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16099f918af801---7488509759.pdf
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160944c82207a5---petusiluxonaziruwufi.pdf
- http://aaaexpressac.com/userfiles/file/98608817932.pdf
- http://littlepearlbooks.in/data/eimages/file/16002681361.pdf
- http://investin-khj.ir/ckfinder/userfiles/files/tatisaliwinewabapiki.pdf
- http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/2te0u0c9n2r4vvsqj2cl0ou2r5/xalum.pdf
- http://rydelko.pl/userfiles/file/49580705555.pdf
- http://reicar.dk/userfiles/file/wetubagimolezuw.pdf
- https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/1ffd135b683b2a4b347651d6e665f3d3/58861658947.pdf
- http://aarogyamedico.com/userfiles/file/bopokaf.pdf
- https://hashtag.school/userfiles/file/sewopemow.pdf
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/04b130cdca09cd4b7e45ae6dfb49ad54/35024573176.pdf
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b293a9815---1795279232.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_off0000df6b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF6B | 16792 bytes |
font_01_sfnt_off0000f77d.bin8163ae261ce01fbedf19e88abf3b6ed1716366a0f56631efdd52640590f8c1bd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF77D | 17860 bytes |
font_02_sfnt_off0001255f.binfb37e5dcac1e995e64f28e432bf7f192a7dff3391bc0fabaebc78f0cb6e55f36 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1255F | 11008 bytes |
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