MALICIOUS
66
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was identified as malicious by an ML classifier and contains numerous embedded URLs, many of which point to other PDF files. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of link farming on disposable hosting, suggesting a non-standard use of the PDF. While no scripts were explicitly extracted, the nature of the embedded URLs and the link farm heuristic suggest a potential for malicious content delivery or SEO manipulation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
Heuristics 4
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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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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://classtool.info/upload/files/gapuvojolidatemaporiwumal.pdf In PDF document text
- https://cytairtool.com/test/userfiles/file/20210902_29eed.pdfIn PDF document text
- http://eegbiofeedback-leszno.pl/userfiles/file/fubivuxovewufi.pdfIn PDF document text
- http://dkmmotor.com/files/userfiles/file/10241951251.pdfIn PDF document text
- http://www.pattyn360.com/upload/forum/files/67168962400.pdfIn PDF document text
- http://yongqingtech.com/d/files/61746224335.pdfIn PDF document text
- https://epgeptech.hu/ckfinder/userfiles/files/xegako.pdfIn PDF document text
- http://www.elstar.ru/uploads/files/nenojovoruzisipevirusefi.pdfIn PDF document text
- https://profix.fr/ckfinder/userfiles/files/dodaguvozakazowizaguk.pdfIn PDF document text
- http://www.icf-plant.com/files/file/76137982007.pdfIn PDF document text
- http://ellissi.org/userfiles/files/zigiwepifawutamalowumeg.pdfIn PDF document text
- http://auxerretv.com/content/public/file/30018082764.pdfIn PDF document text
- http://ansing.nl/userfiles/file/48526589105.pdfIn PDF document text
- http://scard.vn/app/webroot/uploads/files/leladiluk.pdfIn PDF document text
- https://krygina40.ru/UserFiles/File/nofaxogajilerakujune.pdfIn PDF document text
- https://yuanfuconstruction.com/ckfinder/upload/files/88023644915.pdfIn PDF document text
- http://happyland-nsk.net/ckfinder/userfiles/files/70188088989.pdfIn PDF document text
- http://smsalumni1971.com/apadmin/uploads/userfiles/files/51840030800.pdfIn PDF document text
- http://emeat.ru/var/files/79824065012.pdfIn PDF document text
- https://dom4m.com/userfiles/files/53822889518.pdfIn PDF document text
- https://santa.sg/images/users/00000000/files/zarosiwux.pdfIn PDF document text
- https://mediaskills.rs/files/zevunugerudanamot.pdfIn PDF document text
- http://www.supair-lux.hu/ckfinder/userfiles/files/75614789637.pdfIn PDF document text
- http://artattack-concerts.de/files/file/tigomiretevekuxor.pdfIn PDF document text
- https://grootformaatspandoeken.nl/userfiles/file/rixozo.pdfIn PDF document text
- http://www.neoneophytou.com/ckfinder/userfiles/files/5330139518.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=wild+blood+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_off0000dfae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFAE | 10196 bytes |
SHA-256: 80ef4b443bb1b2edee42f765b8ffa8f38366e2f26c40c69ffb8df53c95bf2573 |
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font_01_sfnt_off0000f655.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF655 | 17900 bytes |
SHA-256: 334c7142c75d069b53bcd74186c58a37a3d2d24889ab5b605838e10acdad1cea |
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font_02_sfnt_off0001252c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1252C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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