MALICIOUS
94
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external PDFs hosted on disposable domains, a common tactic for distributing malware. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple PDF_URI heuristics further supports this. While no scripts were directly extracted, the overall structure and link farm behavior suggest an attempt to trick users into downloading and opening malicious content, likely a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 6
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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://sherwoodchambergolf.com/ckfinder/userfiles/files/95684134000.pdf In PDF document text
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135133d0c826---90528477205.pdfIn PDF document text
- https://artlabjo.com/userfiles/file/mivirozabijiwujad.pdfIn PDF document text
- http://nage-z.com/ckfinder/userfiles/files/15056155201.pdfIn PDF document text
- http://ahkkpcm.org/userfiles/piluvalatopaxikipewuvumi.pdfIn PDF document text
- http://nhactheducthammy.com/upload/files/vevabu.pdfIn PDF document text
- http://gonvvama.net/filespath/files/20210920074927.pdfIn PDF document text
- http://ankaraeksioglu.com/resimler/files/1400561674.pdfIn PDF document text
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/0bac4014b0e50323198796f1d9fa54db/fuvomizubavij.pdfIn PDF document text
- http://140.121.161.111/ckfinder/userfiles/files/12477735803.pdfPDF link annotation
- https://ladachess.ru/userfiles/file/gavekiwuriravaxipofamodi.pdfIn PDF document text
- https://beautydent.hu/editor_up/68593449440.pdfIn PDF document text
- http://irinabailey.com/upload/files/40258131334.pdfIn PDF document text
- http://workontext.ru/media/file/59959135559.pdfIn PDF document text
- http://mottaing.eu/userfiles/files/zuzezak.pdfIn PDF document text
- https://computerzone.pk/file/99638933262.pdfIn PDF document text
- http://leaguengn.com/userfiles/file///48575408899.pdfIn PDF document text
- http://dtyxbpzx.com/filespath/files/20210910174334.pdfIn PDF document text
- http://bernendorf.ru/userfiles/file/20873318541.pdfIn PDF document text
- http://pspectr.ru/userfiles/file/47151070169.pdfIn PDF document text
- http://jarauwerdaenzn.nl/userfiles/file/nogotomakofewimabevuporo.pdfIn PDF document text
- http://pfmconsulting.org/survey/userfiles/files/titaxab.pdfIn PDF document text
- https://lyubomiradineva.com/files/file/femimet.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=prehistoric+tribes+android+game+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_off0000d72f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD72F | 11044 bytes |
SHA-256: 1b2fa3e108cf5f5c3d1363e2f39f992c7513eb1f40f4f904355f99ede83b821d |
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font_01_sfnt_off0000f091.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF091 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000108a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108A3 | 20268 bytes |
SHA-256: 5bf4ef4ea94dbffc92e8c1570534577d640ec198995fbe8c8c252df3110a9f0c |
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