MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness. The document body, though partially obfuscated, contains the title 'Esperanza matematica en probabilidad y estadistica' and references wkhtmltopdf, suggesting a lure document. The primary attack pattern involves redirecting the user to a link farm, likely for SEO poisoning or to host further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 4
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://nepaawakening.net/uploads/1/3/0/4/130489358/130489358.html#esperanza+matematica+en+probabilidad+y+estadistica PDF link annotation
- http://mileagemaven.com/uploads/1/3/0/7/130774962/7005892.pdfIn PDF document text
- http://alphagroup.consulting/uploads/1/3/0/7/130739221/7933139.pdfIn PDF document text
- http://sadielakeevents.com/uploads/1/3/0/4/130488141/6102133.pdfIn PDF document text
- http://getstemcellinfo.com/uploads/1/3/0/8/130813094/1387600.pdfIn PDF document text
- http://relaysecurity.com/uploads/1/3/0/4/130483847/lozuk-buxapatezivirij-jevatomafemiji.pdfIn PDF document text
- http://www.spartansinglewoodwolves.com/uploads/1/3/0/5/130589040/434095.pdfIn PDF document text
- http://thelittleschoolproject.com/uploads/1/3/0/9/130969833/vemororu_nuvetomozajove_zomat.pdfIn PDF document text
- http://www.kjosa.us/uploads/1/3/0/5/130544447/fasutejuduxu-tiruvikewupivet.pdfIn PDF document text
- http://ignitefitness.info/uploads/1/3/0/6/130621279/4a5c5877e244.pdfIn PDF document text
- http://npnewbies.com/uploads/1/3/0/8/130815031/4732883.pdfIn PDF document text
- http://burke-llc.com/uploads/1/3/0/5/130588607/8312877.pdfIn PDF document text
- http://eeshv.eesforjobs.com/uploads/1/3/0/6/130604344/8767a3d4fc6.pdfIn PDF document text
- http://hostmaster.unexplainedjoy.com/uploads/1/3/0/8/130813798/3966833.pdfIn PDF document text
- http://humphreyscountyculturalmuseum.org/uploads/1/3/0/4/130483510/tebuwovarexawi-zobefasejifoja-jesavoxotuv.pdfIn PDF document text
- http://minimumtread.com/uploads/1/3/0/6/130621755/pajizuzuvona.pdfIn PDF document text
- http://traineronatrike.com/uploads/1/3/0/6/130639911/cbd6b5fc26.pdfIn PDF document text
- http://arkk.biz/uploads/1/3/0/6/130605504/8279375.pdfIn PDF document text
- http://burtandbrewington.com/uploads/1/3/0/3/130323156/d173b3c33.pdfIn PDF document text
- http://arrestekstil.com/uploads/1/3/0/7/130738778/vasatixapora.pdfIn PDF document text
- http://nutritionalbiochemistryresearchgroup.org/uploads/1/3/0/6/130621523/gedugabuburepip.pdfIn PDF document text
- http://howepropertymanagement.net/uploads/1/3/0/7/130775942/belegifafufo.pdfIn PDF document text
- http://www.motorkingauto.com/uploads/1/3/0/6/130639690/561e9.pdfIn PDF document text
- http://www.yingdesignstudio.com/uploads/1/3/0/7/130739935/255fcff770e0.pdfIn PDF document text
- http://ns2.whitehouse.edu.pk/uploads/1/3/0/5/130590541/62e828d645.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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
- https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn 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_off00008051.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8051 | 9452 bytes |
SHA-256: 3aec9ff6d6c036179325c889b0faa6404d3f49bc6d5919ede30d8e378df0aee7 |
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font_01_sfnt_off0000a2ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA2EC | 3000 bytes |
SHA-256: 63c669e10dd6169ba0d37950b4d66078befbc6d016383f5f1df6979ad38861ea |
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font_02_sfnt_off0000ad7f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD7F | 16064 bytes |
SHA-256: cbadadfc837eb6c758d077217bfbf158a98bdcd4108de75fb9034e1d6a9b9709 |
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