MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a malformed exploit stream. It contains numerous links pointing to compromised WordPress sites and disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics indicate that the PDF is designed to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 7
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://ketchas.ru/uplcv?utm_term=chaos+space+marines+paint+schemes PDF link annotation
- https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/csnsv894sncgsje9krbcek3n2c/32485800482.pdfIn PDF document text
- https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/dssqrikifk4vansbpl9qjj4u03/18452847562.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/ls0ak7iuvbtttkhgoe0mpdvrou/levixixalotuferof.pdfIn PDF document text
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0fc1b8d6df---nerubavakewi.pdfIn PDF document text
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160b59ca7beec7---39222558206.pdfIn PDF document text
- https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/be6606d5237e562849e13c6d83b0c08f/vonoko.pdfIn PDF document text
- http://apcmagon.com/userfiles/55375271928.pdfIn PDF document text
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/g21mfvmm5rsabesipevoi7dcvu/14431416028.pdfIn PDF document text
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075d2b0128c4---75857724112.pdfIn PDF document text
- http://bright-mineral.com/uploadfile/file/2021052200533813.pdfIn PDF document text
- https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/ca0f54d8c27b23845a898243f0d44262/64279689929.pdfIn PDF document text
- http://lohsclassof70.com/clients/3/31/31ca850ff086a58b81c8700e10a01852/File/83261503080.pdfIn PDF document text
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aba1d4144e1---1764422494.pdfIn PDF document text
- http://www.ecvbrass.ch/user/web/file/miridunatelul.pdfIn PDF document text
- https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/782c1d70c69c3bc7e46fe081930295c4/44214067643.pdfIn PDF document text
- http://www.bash.cl/media/file/31442583834.pdfIn PDF document text
- http://vom-ragnaroek.de/uploads/file/22015584314.pdfIn PDF document text
- http://libron.pl/fckupload/assets/file/sawikufojametulenavi.pdfIn PDF document text
- http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb4f81a708f---85315473080.pdfIn PDF document text
- http://www.advokat.com/app/webroot/img/fck/file/66218104518.pdfIn PDF document text
- http://ebbers-schilderwerken.nl/uploads/files/46781899811.pdfIn PDF document text
- http://sake2metustin.com/uploads/files/zatigekunutizuw.pdfIn PDF document text
- http://springhs1988.com/clients/a/a7/a70db2535ed58991dd9724faf9b165d0/File/5907708080.pdfIn PDF document text
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/h9b1kf8r3q4vij39op1ce24ukk/6202240215.pdfIn PDF document text
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/s1svr8odtf9opr4fg6vqrt43bp/wiwifubewagomageges.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_off0000f4c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4C7 | 10624 bytes |
SHA-256: a6832d27a0f1e9bf424e03c211f4419802a8322de6033cf3d683ecd4b50fb16c |
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font_01_sfnt_off00010ce8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CE8 | 17024 bytes |
SHA-256: e600474e09aed39385d5b226f420972ad2c5366220849bf8392b62acfe007a31 |
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font_02_sfnt_off00013991.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13991 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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