MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and a link farm structure. The embedded JavaScript likely facilitates the redirection to a collection of external PDF files hosted on various domains, suggesting a phishing or malware distribution campaign. The presence of numerous links and the link farm heuristic point towards an attempt to obscure the true malicious destination or to host a large number of lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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 http://arabic.cz/ckfinder/userfiles/files/rotazatarofanagusarukuvo.pdf In PDF document text
- https://xn--23-6kci4asohe8k.xn--p1ai/userfiles/file/wuxezajerixokusibukobajup.pdfIn PDF document text
- http://www.aamuhsv-madisonalumni.org/files/files/13384807262.pdfIn PDF document text
- http://szentdorottyapatika.hu/files/39931817403.pdfIn PDF document text
- https://www.iieng.org/editor/ckfinder/userfiles/files/bixora.pdfIn PDF document text
- http://cavusofis.com/images_upload/files/guxevonadiwugukime.pdfIn PDF document text
- https://handinhand-daycare.com/ckfinder/userfiles/files/13240008984.pdfIn PDF document text
- http://boletos.luzservicos.com/ckfinder/userfiles/files/zuwirurepigalesowu.pdfIn PDF document text
- http://tokyoracing.hu/userfiles/file/56709824867.pdfIn PDF document text
- http://closehorses.com/userfiles/file/sujoxusifavajanonofuri.pdfIn PDF document text
- http://fazendasaojudastadeu.net/fotosempresa/files/nuwazugukotanatad.pdfIn PDF document text
- http://sineadstone.com/userfiles/file/95838585970.pdfIn PDF document text
- http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/71015147941.pdfIn PDF document text
- http://airmon.hu/images/files/kebixubotomaxaw.pdfIn PDF document text
- http://isystem.hu/userfiles/file/zomuwezowaguxelu.pdfIn PDF document text
- http://mmbassisiprovince.in/files/js/ckfinder/userfiles/files/tamudiwopudusetikutikevez.pdfIn PDF document text
- http://biomax.shop/filespath/files/20210926003438.pdfIn PDF document text
- http://www.peritaonline.es/ckfinder/userfiles/files/vuzip.pdfIn PDF document text
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161443bdfa9f8c---71726626094.pdfIn PDF document text
- http://www.jindatunnel.com/up_files/file/tivuvinubiderovasamodif.pdfIn PDF document text
- http://nakakinpump.kr/fckeditor/upload/file/79540574216.pdfIn PDF document text
- http://ingegnasrl.com/userfiles/files/lapebujikigifaloloxo.pdfIn PDF document text
- http://www.advokat.com/app/webroot/img/fck/file/fadijikusuna.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=my+time+at+portia+street+lightPDF 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_off0000be50.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE50 | 15852 bytes |
SHA-256: 5c4857d610262db527a2299f494f8954c06cde4640af712a9b0c554c410aa24c |
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font_01_sfnt_off0000e6b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6B0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fec7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEC7 | 10704 bytes |
SHA-256: 23b7988df72bfd55108d1c0371a1c3a27d52e2359ca248b1424561a5812e53d2 |
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