MALICIOUS
74
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The ML classifier strongly indicated maliciousness. The document also contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or redirection scheme to deliver a secondary payload or phish for credentials. The presence of embedded JavaScript points to T1059.007, and the overall nature of the document suggests it was delivered as a spearphishing attachment (T1566.001).
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
Heuristics 5
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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://ktcyy.com/ckfinder/userfiles/files/85962119036.pdf In PDF document text
- https://rugsinc.in/UserFiles/files/51872557936.pdfIn PDF document text
- http://www.yeosung21.or.kr/ckfinder/userfiles/files/1633028564.pdfIn PDF document text
- https://glycocalyx.nl/userfiles/image/file/nudoradudojive.pdfIn PDF document text
- http://kiuanai.com/userfiles/file/pavutet.pdfIn PDF document text
- https://amthanhanhsangchinhhang.vn/upload/files/60164413672.pdfIn PDF document text
- http://soosanfix.com/upload/fckeditor/file/57184218903.pdfIn PDF document text
- http://uts.edu.co/portal/app/ckfinder/userfiles/files/49562689994.pdfIn PDF document text
- http://kwiatmetal.pl/userfiles/file/44693793598.pdfIn PDF document text
- https://eltechma.com/zdjecia/fck/file/21101937403.pdfIn PDF document text
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135979b030f1---65529379602.pdfIn PDF document text
- http://tk-weld.com/images/library/File/92301891278.pdfIn PDF document text
- https://rh4-h1tapi-turbo.com/contents/files/zovogefes.pdfIn PDF document text
- http://batiment-tunisie.com/userfiles/file/16195699432.pdfIn PDF document text
- https://eravukappalpalli.com/userfiles/file/gekowulowifoz.pdfIn PDF document text
- https://heyratacademy.ir/file/82095017887.pdfIn PDF document text
- http://sasmedm.com/www/js/ckfinder/userfiles/files/lidukojar.pdfIn PDF document text
- http://xn--80aa5alfu.kz/file/33769505799.pdfIn PDF document text
- http://runo34.ru/attachments/file/galunesedagojaxarum.pdfIn PDF document text
- http://antonio-pelella.eu/userfiles/files/jibopajewadimogodife.pdfIn PDF document text
- http://jiendurancecoaching.com/ckfinder/userfiles/files/26101081858.pdfIn PDF document text
- https://gitteszoneklinik.dk/ckfinder/userfiles/files/9012057611.pdfIn PDF document text
- http://harlit.com/upfiles/file/xenaxesisakofuriz.pdfIn PDF document text
- http://sreema.org/FCKeditor/file/42715160094.pdfIn PDF document text
- http://urduhadith.org/survey/userfiles/files/62255303903.pdfIn PDF document text
- http://www.childofafrica.org/media/userfiles/file/fupozubinez.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=need+for+speed+most+wanted+2005+free+download+full+versionPDF 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_off0000b470.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB470 | 11264 bytes |
SHA-256: 8229c77e2d121fc17e3d1a73914f647631802cea608125f2bb4b0cb1944faffb |
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font_01_sfnt_off0000cf06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF06 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e718.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE718 | 14932 bytes |
SHA-256: 8948596093514e631853b59190abcdafdd182c7d41350394dbd788481dbb8521 |
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