MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. It also contains numerous external links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 http://bazis-expertiza.ru/ckfinder/core/connector/php/files/solunudotimumodiri.pdf
- https://sanvexe.vn/webroot/img/files/loririruj.pdf
- http://brianhaymore.com/images/e/file/89547658745.pdf
- https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/7fc40186382beb68eaf790fa05a6ad8e/nepugalesavovibekoga.pdf
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbfb5587dd---55843127400.pdf
- http://astro2sphere.com/admin/images/file/47864582221.pdf
- http://bobiniauto.com/userfiles/file/39828417532.pdf
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16076062a37b34---8875925400.pdf
- http://capmar.eu/userfiles/file/92880915580.pdf
- http://albatrossmrn.com/konadnew/userfiles/file/mifip.pdf
- http://thewellmanteam.com/userfiles/files/45230126743.pdf
- http://chocoenglish.com/_UploadFile/Images/file/78809699098.pdf
- https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16080a6a70e75a---mojuvus.pdf
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/16092bb0cc6261---wizetujulelox.pdf
- http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079450c2a827---87314030393.pdf
- http://northmarking.com/userfiles/files/wuwafogafadejijumigufo.pdf
- http://jingluo.net/uploadfiles/files/jolomawefemubufemotidaja.pdf
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/011f8a5f6a5d33a354f811f7b2696662/zatesefitikinuzaniw.pdf
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609a040fa988e---papugefafeli.pdf
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d44822405a---60297453777.pdf
- https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/c77d3b74546800de321134d38bc148b6/widugop.pdf
- http://faithleader.org/js/ckfinder/userfiles/files/xolaja.pdf
- https://a5productions.com/home/a5pro/public_html/ckfinder/userfiles/files/85525034097.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=history+of+building+materials+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_off00010051.bin156609ccdead97ef8bad861b060829ef2d2aec6c3b60f96a4473a06d4b3a5eeb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10051 | 11188 bytes |
font_01_sfnt_off00011a12.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A12 | 16792 bytes |
font_02_sfnt_off00013224.bind06cb9c41d8945d6f9586680fbaa07f649dfe93a1fe1f79263d97c9c00ff49b3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13224 | 17044 bytes |
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