MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and a link farm structure. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests a deliberate attempt to create numerous links on disposable hosting, likely to obscure malicious intent. The embedded JavaScript, while not fully detailed, is a common vector for exploiting PDF vulnerabilities or initiating further malicious actions, such as downloading second-stage payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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 http://intranet.uts.edu.co/portal/app/ckfinder/userfiles/files/xosazosividedo.pdf In PDF document text
- http://wuyioutdoor.com/userfiles/file/munufazapinetakojoxenel.pdfIn PDF document text
- http://conflictfreeelectronics.com/ourprojects/chowki/UserFiles/renuka/file/xorezereloxiwamo.pdfIn PDF document text
- https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161367285da6a5---82827319560.pdfIn PDF document text
- http://omgmediatank.com/userfiles/files/vusobar.pdfIn PDF document text
- https://eletvital.hu/uploads/files/46953706981.pdfIn PDF document text
- https://sporyolu.com/resimler/files/lelowed.pdfIn PDF document text
- https://mwasafat.com/uploads/files/20567008905.pdfIn PDF document text
- http://dalnoboy.net/data/filestorage/upload/files/vasikozomuwetotozokonif.pdfIn PDF document text
- http://clubmaniacr.com/campannas/file/mifaraleviri.pdfIn PDF document text
- http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/74959657764.pdfIn PDF document text
- http://stauarchitetti.eu/userfiles/files/xenumexexefivewomanujoz.pdfIn PDF document text
- http://iburgisidimarsala.eu/userfiles/files/14580615140.pdfIn PDF document text
- https://minhgianggroup.vn/upload/files/54666937316.pdfIn PDF document text
- http://foxadv.net/file/78534305655.pdfIn PDF document text
- http://aivieksteslaivas.lv/userfiles/file/88377310644.pdfIn PDF document text
- http://sgd42.ru/userfiles/file/muwowiraxa.pdfIn PDF document text
- http://amandatravel.com/userfiles/file/miradekuwisideveveduwuvo.pdfIn PDF document text
- https://study-abroad-travel.com/ckfinder/userfiles/file/silomejojosopivevejuzufe.pdfIn PDF document text
- http://arqing.es/ckfinder/userfiles/files/19003271407.pdfIn PDF document text
- http://langeline.com/ckeditor/upload/files/ruzulilanagafad.pdfIn PDF document text
- http://dvg.asia/ckfinder/uploadfiles/files/74599161433.pdfIn PDF document text
- https://fo-prefectures.com/pages/files/pevitu.pdfIn PDF document text
- http://vasekurzy.cz/userfiles/file/kugazujigafomasinarudi.pdfIn PDF document text
- https://agro-zavod.ru/app/webroot/js/ckfinder/userfiles/files/mimikure.pdfIn PDF document text
- http://china-hold.com/UploadFile/file/20210907160829473.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=truecaller+old+version+2019+apk+downloadPDF link annotation
- 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_off0000d84b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD84B | 11180 bytes |
SHA-256: a299381e91af3ce15993f003c748c568371867d966adb387b45cadbcffbb37f8 |
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font_01_sfnt_off0000f2a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2A8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010aba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ABA | 18268 bytes |
SHA-256: 738538a2220ec5237cc18d6d97bae389fe3fbf4e5c68b46ae34320f25440d499 |
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