MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The embedded JavaScript stream and numerous external URIs, including one pointing to a link farm on disposable hosting, suggest an attempt to redirect users to malicious sites. The primary URL, https://synerhu.ru/uplcv?utm_term=how+to+unlock+the+password+of+mobile, likely serves as a lure for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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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://synerhu.ru/uplcv?utm_term=how+to+unlock+the+password+of+mobile PDF link annotation
- http://61kidsclub.com/userfiles/file/76601615311.pdfIn PDF document text
- http://www.ppk-kp3k.kkp.go.id/ver2/extra/ckfinder/core/connector/php/media/ckfinder/files/tonovifob.pdfIn PDF document text
- http://alfadent-volg.ru/images_uploads/files/wanal.pdfIn PDF document text
- https://szelvedojavitasmiskolc.hu/files/files/juxejixubigipil.pdfIn PDF document text
- http://xindeshiye.com/uploadfile/file///2021090603494330.pdfIn PDF document text
- http://veitali.com/upload/files/7801839337.pdfIn PDF document text
- http://ivankotov.ru/img/lib/file/tizofigezisasazebas.pdfIn PDF document text
- https://bakwanudang.com/contents/files/94002727163.pdfIn PDF document text
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/161375b1387b84---mitotinijaxurufuzorowedi.pdfIn PDF document text
- https://98ing.com/upload/ck/files/20210903_075033.pdfIn PDF document text
- http://ggbris.com/slbdavbatala/userfiles/file/morosofixam.pdfIn PDF document text
- https://havilahbuilders.com/userfiles/file/93712629813.pdfIn PDF document text
- http://jedzenie365.pl/ckfinder/userfiles/files/fegotivi.pdfIn PDF document text
- http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/87157087633.pdfIn PDF document text
- http://mastervin.ru/files/file/9662342519.pdfIn PDF document text
- http://palestraarkadia.it/userfiles/files/viwupe.pdfIn PDF document text
- http://www.prctech-th.com/ckfinder/userfiles/files/jufamaguvirasajig.pdfIn PDF document text
- http://pietroquatriniarchitetto.eu/userfiles/files/tubepe.pdfIn PDF document text
- http://dolphinegypt.net/userfiles/file/48074628296.pdfIn PDF document text
- https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/fuwidijebobemurawowa.pdfIn PDF document text
- http://rsst77.ru/upload/files/55209530847.pdfIn PDF document text
- http://info56.ru/userfiles/file/41447225460.pdfIn PDF document text
- https://www.aukuras.org/ckfinder/userfiles/files/19831023067.pdfIn PDF document text
- https://hideab.se/tc/Mediagalleri/file/ganefosusaloko.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_off0000b3aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3AA | 16732 bytes |
SHA-256: 2a1e309e9a2edf6f02abcc8cb49d153080cc77416cd190f4b544b3ff6af9b894 |
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font_01_sfnt_off0000ddb1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDB1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f5c8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5C8 | 11296 bytes |
SHA-256: 64b9b9cfed60fb248e461c969283ee3cd0d2591f1b0a415eec468a74cdabaeeb |
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