MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious payloads. The PDF also contains numerous external URIs and is flagged as a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites or download further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://ketchas.ru/uplcv?utm_term=how+to+add+trackers+in+utorrent+android PDF link annotation
- http://kpotplace.com/uploads/files/32873162200.pdfIn PDF document text
- http://novelinternationalschool.com/ckfinder/userfiles/files/21563336874.pdfIn PDF document text
- http://ukrfirework.com/images/file/94357073880.pdfIn PDF document text
- http://pospatrans.cz/UserFiles/File/zuxet.pdfIn PDF document text
- https://www.wroclawmodelshow.pl/ckfinder/userfiles/files/43979100737.pdfIn PDF document text
- http://georgekoldun.com/var/upload/file/sesem.pdfIn PDF document text
- http://anchor-m.com/js/upload/files/98992016840.pdfIn PDF document text
- https://virtualpulse.eu/UserFiles/file/giretikazuvabuvatulogori.pdfIn PDF document text
- http://www.ekoforte.com/upload/file/12881208759.pdfIn PDF document text
- http://scherzerpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rogituzatomided.pdfIn PDF document text
- http://circolosilverblufitnessclub.eu/userfiles/files/zurulamu.pdfIn PDF document text
- http://stefani.cz/fck/file/suzezeruf.pdfIn PDF document text
- http://hanasushimenifee.com/uploads/files/46862294507.pdfIn PDF document text
- http://aurora-c.jp/files/files/78036575901.pdfIn PDF document text
- http://yule-sign.com/upload/editor/file/20210912002322.pdfIn PDF document text
- http://cofetariafraguta.ro/UserFiles/file/78725677671.pdfIn PDF document text
- http://xn--knstlerische-biografie-arbeit-lbd.ch/userfiles/files/tagewiweb.pdfIn PDF document text
- http://fanghsin.com/uploads/files/202109011900087277.pdfIn PDF document text
- http://dijladentalcenter-qa.com/userfiles/file/23290653123.pdfIn PDF document text
- http://novelinternationalschool.com/ckfinder/userfiles/files/86909538349.pdfIn PDF document text
- https://www.autopsrus.com/ckfinder/userfiles/files/fajamovabefofogozuzup.pdfIn PDF document text
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614118835b110---komapetilijegiki.pdfIn PDF document text
- https://mehfermobilsaglik.com/userfiles/file/87612409092.pdfIn PDF document text
- http://haiqi-machine.com/d/files/regikazeboxudiba.pdfIn PDF document text
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/92f7f957da07b96ccdd145ad65306a34/38362642149.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_off0000e1e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1E0 | 10588 bytes |
SHA-256: 5c594e4388e092fbd16e5081e2eeb8de3ca54e7827b5acad091f35980442fd4b |
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font_01_sfnt_off0000fa33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA33 | 18252 bytes |
SHA-256: 73e3193697ed26fe34ec44787fe36dcd7e2cdb32b838e980e126bdcab172c73d |
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font_02_sfnt_off00012960.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12960 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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