MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded links, many pointing to disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The presence of embedded URLs and the nature of the heuristics strongly indicate a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 5
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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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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://synerhu.ru/uplcv?utm_term=psiphon+pro+cracked+apk+unlimited+speed PDF link annotation
- http://www.chiringuitomediterraneo.com/ckfinder/userfiles/files/vudikolavixonaveta.pdfIn PDF document text
- http://konberdbio.com/upload/files/zodonivawadedada.pdfIn PDF document text
- http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec52308f31---86803370303.pdfIn PDF document text
- https://hk-delight.com/UploadFiles/file/xadugowe.pdfIn PDF document text
- http://f-okinawa.com/img/tmp/file/24162203360.pdfIn PDF document text
- https://ovistar-dz.com/ckfinder/userfiles/files/21897841295.pdfIn PDF document text
- http://topimmigrationlawyer.org/ckfinder/userfiles/files/puzufadebopetipizu.pdfIn PDF document text
- http://chaputlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kafaluboviruvelalefosetew.pdfIn PDF document text
- https://svarovanijelinek.cz/ckfinder/userfiles/files/piselalijubamudazosaf.pdfIn PDF document text
- https://quatden.vn/webroot/img/files/sifogu.pdfIn PDF document text
- https://landatur.com/files/galeria/files/gumovire.pdfIn PDF document text
- http://dirpub.org/editor/ckfinder/userfiles/files/93263983048.pdfIn PDF document text
- http://cimkezes.hu/uploads/ckfinder/userfiles/files/35463588157.pdfIn PDF document text
- https://debcopharma.com/userfiles/file/pazejulobawukikudavaz.pdfIn PDF document text
- http://schodylux.pl/userfiles/file/44716796723.pdfIn PDF document text
- http://7seapharmtech.com/Uploadfiles/files/50626136199.pdfIn PDF document text
- http://boletin.alicantehosteleria.com/lib/ckfinder/userfiles/files/75544008476.pdfIn PDF document text
- http://adamex.ukrkarta.ua/fckeditor/userfiles/file/worinituvibisabelufewafu.pdfIn PDF document text
- https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/ce3fa5fa22c493dd4391a6031aed2fba/21924958486.pdfIn PDF document text
- https://nakatarikaszel.pl/app/webroot/userfiles/file/viroxogoledi.pdfIn PDF document text
- http://ryyw.com/upload/files/2021/09/202109091352108509.pdfIn PDF document text
- https://bep.semmelweis.hu/userfiles/file/ginunufupalenegikuregel.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_off0000ea45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA45 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010257.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10257 | 17568 bytes |
SHA-256: a878294117d82a25e3ce6e5489ac2cef0bc21530517116c452eecfb79f66f460 |
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font_02_sfnt_off00012fe7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FE7 | 10972 bytes |
SHA-256: aabf259d9d28c21fc18fc8bdf24d6fc4d8d07f921ba8313cff9503d889a04853 |
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