MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external URLs, indicating an attempt to download and execute additional malicious content. The presence of a 'download button' heuristic further supports a phishing or social engineering lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
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://huntic.ru/uplcv?utm_term=essential+grammar+in+use+pdf+4th PDF link annotation
- http://andrenickels.de/ckfinder/userfiles/files/zijeseregexasetok.pdfIn PDF document text
- https://posetili.ru/userfiles/file/tarokarudewafes.pdfIn PDF document text
- https://botroul.be/uploads/19540935894.pdfIn PDF document text
- https://prosaison.fr/userfiles/files/mejuxipesus.pdfIn PDF document text
- http://vattuxaydunghl.com/userfiles/file/43283356768.pdfIn PDF document text
- https://karatenarrewarren.com.au/ckfinder/userfiles/files/nijewekosajixigedazeni.pdfIn PDF document text
- https://beautydiction.com/ckfinder/userfiles/files/68135548935.pdfIn PDF document text
- http://recko.ru/ckfinder/userfiles/files/nojobeditunetesoxigu.pdfIn PDF document text
- http://gzhangqin.com/uploadfile/files/25741379919.pdfIn PDF document text
- https://apaman.ti-am.jp/js/ckfinder/userfiles/files/36339653619.pdfIn PDF document text
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/3f3ca2e04821ed4126bbe8392d75f73e/pobop.pdfIn PDF document text
- http://rideabikenews.com/user_img/files/buvixesumilomuwowutenulop.pdfIn PDF document text
- http://hkwwta.org/userfiles/lazegoxarilufosojev.pdfIn PDF document text
- http://wuxihemei.com/ckfinder/userfiles/files/20210907_071722.pdfIn PDF document text
- http://cukorbetegshop.hu/files/ridoxu.pdfIn PDF document text
- https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613851f55ff71---wegavizatuwimibazesojosa.pdfIn PDF document text
- http://woodlander.sk/grafika/file/wopasad.pdfIn PDF document text
- http://geoass.eu/userfiles/files/zewubufupomiloku.pdfIn PDF document text
- http://jjkxmy.com/upload/files/202109221428028663.pdfIn PDF document text
- http://mathcountsoutreach.org/userfiles/file/jezixovefobazepugafoja.pdfIn PDF document text
- https://digireg.dk/upload/95805371866.pdfIn PDF document text
- http://gryfarmerskie.pl/pliki_wyswig/files/66206024448.pdfIn PDF document text
- http://hz-kontejnery.cz/ckfinder/userfiles/files/92666584176.pdfIn PDF document text
- https://piphoto.tw/uploads/files/202109191722575809.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_off0000f4e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4E6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010cf8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CF8 | 19020 bytes |
SHA-256: ed7097f4ca8f92628d4bbfd0933c7fbe3b2555154341658ad077b164bb0f8b2a |
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font_02_sfnt_off00013eb3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13EB3 | 10984 bytes |
SHA-256: 1f4fed70ca9b5db0d837e19470fb099c4f1924451d0ca7e7dc04544163fda779 |
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