MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to obscure the final malicious destination. ClamAV and ML classifiers strongly indicate malicious intent, likely for phishing or malware delivery. The embedded JavaScript is a primary mechanism for executing malicious actions.
Machine Learning
- Nyx PDF Classifier malicious score 0.9979
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/695b8518f02730c3a9952a69842a8a2f/54212128052.pdf
- http://szguilong.com/userfiles/files/10436497974.pdf
- http://verduciautodemolizioni.it/userfiles/file/roseguzisi.pdf
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/4d981dcb1d5f81c18e5a4922c4b281a3/defupi.pdf
- http://musiconthebay.org/clients/2/26/269dd5bc96e197da989a8dccc71442af/File/99718042071.pdf
- http://www.thaiboat.net/image/upload/File/10535470434.pdf
- http://timnhanhonline.com/upload/files/xedetexipudezatatona.pdf
- http://austria-ex.com/images/blog//file/wobunimi.pdf
- http://www.awakohchang.com/image/upload/File/akidoxewideban.pdf
- http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087b641c60c1---16271857366.pdf
- https://lecachet.fr/docs/files/92544652223.pdf
- http://daieimotors.com/js/upload/files/femupizifunenesurerenade.pdf
- https://seerupit.dk/assens/file/kalevubikusedenegeve.pdf
- https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/60e9319ac51bdfec2ca6e7dcced382fe/90962039098.pdf
- http://cmcthailand.com/ckfinder/userfiles/files/fimigureri.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16075bdfc693e4---jaxevi.pdf
- http://www.cpiequipos.com/assets/images/user_files/files/sikeroxonadexosoba.pdf
- https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607623bfb78d8---88784534592.pdf
- https://duvanco.be/docs/files/fadave.pdf
- https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160aa15906921f---65100458026.pdf
- http://chiangmai-esc.net/user_img/files/lukanopumiraj.pdf
- https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/cee6be4a0823f6907945e7dfb3c70725/37197182325.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=aging+breast+tissue
- 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_off0000f736.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF736 | 16792 bytes |
font_01_sfnt_off00010f48.bincb15cf1d04992da45db5809f95878959756d8f251118d15537565936be6f6af8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F48 | 17344 bytes |
font_02_sfnt_off00013c0d.binbc913eee4cada2f497e22f222c73e5dd23ac5a57bf95877b6f2cefaa014da60b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C0D | 10336 bytes |
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