MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected 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 link farm or phishing lure. The presence of 'utm_term' parameters in some URLs further supports the idea of a campaign designed to attract users searching for specific content, such as 'applied fluid mechanics solution manual pdf'. No scripts were extracted, but the overall structure and URL distribution point towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9988
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://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a15e34d7420---60435329098.pdf
- http://aitrans.org/UploadFile/file/F1202106111043101098.pdf
- http://bendhorseride.com/userfiles/file/wenumepoka.pdf
- http://built.lu/userfiles/files/bumugumikoguminanud.pdf
- http://robbinsfamilyhealthcare.com/clients/2/2c/2c787fa606fc56c3a3a24dfc5409695f/File/2367609272.pdf
- http://duquenne-moteurs.fr/webroot/upload/files/13971215193.pdf
- https://5a.ro/ckfinder/userfiles/files/88079716869.pdf
- http://cleangroupbd.com/ck/upload/files/lopebanotiwarezebagajobuk.pdf
- http://stellar-toys.com/ckfinder/userfiles/files/5264749378.pdf
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/f36d122f5fafa88e701d613bfbc632df/51031757327.pdf
- http://apartamentosalbatros.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb04672a526---zudupebin.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f2403f5a30e.pdf
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/ge5hv6t01mfcum7b2td258lul5/nopozizuzarogibopapazimo.pdf
- https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/73aa95e04f97571d3b2af34baee95fb3/22272233252.pdf
- http://epoxidice.ro/mm/file/77439744093.pdf
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16074ba106cfcc---fexafotapoxutavofejalesef.pdf
- http://wjvanderheidedienstverlening.nl/uploads/file/lalimer.pdf
- https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f08eaaddce---17850128670.pdf
- http://hyundaiokla.com/uploads/files/9213554119.pdf
- https://designclarf.it/file/xatujemelalavo.pdf
- http://tokyoracing.hu/userfiles/file/7459098596.pdf
- https://printjet.pl/pliki_user/File/81026048759.pdf
- http://derma-dts.de/files/file/jikinagore.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=applied+fluid+mechanics+solution+manual+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_off0000d948.bin6c2c8bc5750d089c16d1a6defea612e61fd1a897eaff2ff70eed20f8ede25408 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD948 | 10868 bytes |
font_01_sfnt_off0000f23a.bin6246669f30099006f755f9ada1d59488b4a5bc336ba689a988b7a497617fc0cb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF23A | 15740 bytes |
font_02_sfnt_off00011ae3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11AE3 | 16792 bytes |
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