MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous links to external websites, many of which are hosted on disposable domains. The heuristic 'PDF_RANDOM_URL_LINK' specifically points to a PDF link that is algorithmically generated, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection further support the malicious nature of this file, likely used as a phishing or malware distribution vector.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://catamma.ru/uplcv?utm_term=secure+folder+app+for+sd+card PDF link annotation
- http://fongyoskert.hu/userfiles/files/xebazawaxele.pdfIn PDF document text
- https://makiriaszto.hu/ckfinder/userfiles/files/82692892036.pdfIn PDF document text
- http://dooroc.com/tk/upload/file/77586601211.pdfIn PDF document text
- http://kohaz.hu/files/file/lanerimog.pdfIn PDF document text
- http://taxilitomerice.cz/ckfinder/userfiles/files/jurabizofariwejusejipaz.pdfIn PDF document text
- http://www.donboscovizag.org/images/files/28216823213.pdfIn PDF document text
- http://kaies.net/upfiles/210906202155792717a7ur0g.pdfIn PDF document text
- https://leresto-niort.fr/images/userfiles/files/kosomisisili.pdfIn PDF document text
- https://themalc.org/files/file/lumikazufexisanuwapudal.pdfIn PDF document text
- http://chornakorn-packing.com/ckfinder/userfiles/files/50341990889.pdfIn PDF document text
- https://r4binsh4h9-att.com/contents/files/zamef.pdfIn PDF document text
- https://oncallanatomist.org/ckfinder/userfiles/files/76427785268.pdfIn PDF document text
- http://officinedesign.it/userfiles/files/kunajoru.pdfIn PDF document text
- https://alajuusa.ee/media/contents/file/bujopodiju.pdfIn PDF document text
- http://clinicaveterinariacittadivignola.com/userfiles/files/5468107092.pdfIn PDF document text
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/59ef345bd18cb77f0379a9a1dc5dbd65/64774783313.pdfIn PDF document text
- http://k-ookuma.com/js/upload/files/93536043513.pdfIn PDF document text
- http://zhizhencn.com/filespath/files/20210906085022.pdfIn PDF document text
- https://termokingbt.com/ckfinder/userfiles/files/62574308937.pdfIn PDF document text
- http://maquinandoysubastando.com/dleyes/admin/fotos/file/zatepimetofomovete.pdfIn PDF document text
- http://ch-bovi.com/upload/files/99467339847.pdfIn PDF document text
- http://africalegal.nl/userfiles/file/jejubis.pdfIn PDF document text
- http://bbmpva.nl/fckassets/file/zesikegotojunog.pdfIn PDF document text
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613550d358ae3---7792338143.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_off0000ea72.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA72 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010284.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10284 | 17712 bytes |
SHA-256: 0df943c0ecc3c9f8dbe15b65d565edf5431fae0abbdf472c1c21ffa0a743e2ef |
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font_02_sfnt_off000130bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x130BB | 10496 bytes |
SHA-256: ce65b096d1fd88c95221c8cef2db363af090fc672d38c3de6112d5deefcc7f57 |
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