MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript and numerous external URIs pointing to disposable hosting. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm designed to obscure the true destination, and the ML classifier strongly suggests malicious intent. The embedded JavaScript likely facilitates the download or redirection to a malicious payload, aligning with a phishing or social engineering attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://cructi.ru/uplcv?utm_term=strike+force+heroes+3+download+pc PDF link annotation
- http://edukoc.net/userData/ebizro_board/file/56741166037.pdfIn PDF document text
- http://marcobernini.it/userfiles/files/19726522464.pdfIn PDF document text
- https://umutisi.com/umut/upload/files/lukedufezopig.pdfIn PDF document text
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/2e3fecd99e4367332be9f7ab86d6fab1/73663434106.pdfIn PDF document text
- https://koncnc.com/genelresimler/file/nobafenivemidubupel.pdfIn PDF document text
- https://prestinireedcorp.com/userfiles/files/lugonuzimewufenanuk.pdfIn PDF document text
- https://borgopitti.it/userfiles/file/37317349475.pdfIn PDF document text
- https://menu2uplus.com/images/file/pekevowabelafok.pdfIn PDF document text
- http://cetis156.neutronds.com/assets/js/ckfinder/userfiles/files/teligopureb.pdfIn PDF document text
- https://nepaltrekkinginhimalaya.com/assets/userfiles/files/tifukoguk.pdfIn PDF document text
- https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1613c86b712bad---fanufenujofajo.pdfIn PDF document text
- https://verticala.ro/images/userfiles/15600944952.pdfIn PDF document text
- http://studioambienteterritorio.it/userfiles/files/49136221609.pdfIn PDF document text
- http://tythb.com/uploadfile/files/susesexogegakiwiteguguxol.pdfIn PDF document text
- https://saint-florentin.charcutier-traiteur.fr/ckfinder/userfiles/files/bezejilol.pdfIn PDF document text
- http://hastensandbreakfast.nl/userfiles/file/86583310501.pdfIn PDF document text
- http://thietbiantoanttk.com/uploads/files/tupopodinilo.pdfIn PDF document text
- http://guidesdugrandlarge.fr/images/import/file/gevapoteg.pdfIn PDF document text
- http://eksternest.be/images/file/32238947920.pdfIn PDF document text
- http://tsmsaldature.it/userfiles/files/95645515906.pdfIn PDF document text
- https://cobrawire.com/userfiles/files/nafuforesusesenitule.pdfIn PDF document text
- http://worldsocialistpartyindia.org/ckfinder/userfiles/files/60699147296.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_off0000c201.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC201 | 17340 bytes |
SHA-256: e6ee74d586d2d3b89035a3a7831a1493a5795dcc804ea6cb75235bbc891873b3 |
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font_01_sfnt_off0000eef1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEF1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010708.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10708 | 11144 bytes |
SHA-256: 98556d17c01e9254d187ef61eb3a85b4de2839a41e426c4b91ee13c832eb7375 |
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