MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of external links, many of which point to PDF files with numeric or generic slugs on various domains. This indicates a link farm or SEO spam tactic designed to drive traffic to these sites. The document body, though partially corrupted, suggests a lure related to mathematical exercises, which is likely a pretext to disguise the malicious intent of redirecting users to potentially harmful 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://ecgcore.com/uploads/1/3/0/4/130436018/130436018.html#30+ejercicios+de+diferencial+de+una+funci%C3%B3n+resueltos PDF link annotation
- http://edaudit.services/uploads/1/3/0/6/130620756/db51e5c07ed3.pdfIn PDF document text
- http://miramarmoving.com/uploads/1/3/1/4/131438427/ganutawono.pdfIn PDF document text
- http://flpfishers.com/uploads/1/3/1/4/131407293/lewemili.pdfIn PDF document text
- http://singstrongsinglong.com/uploads/1/3/0/5/130589412/2240d01db5b9c.pdfIn PDF document text
- http://ultimatemediatv.com/uploads/1/3/0/5/130544132/8615162.pdfIn PDF document text
- http://textmvmt.com/uploads/1/3/0/2/130272979/9875644.pdfIn PDF document text
- http://ganaderiaregenerativacolombia.org/uploads/1/3/0/3/130379408/sanolemefakopo-mutajagas-zesogudeweka-losenupak.pdfIn PDF document text
- http://larkspurpta.com/uploads/1/3/0/4/130436439/marobado.pdfIn PDF document text
- http://sarajo.de/uploads/1/3/1/4/131406427/puvabatax.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_off0000779d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x779D | 9420 bytes |
SHA-256: 1dc8fe379aa3200f7e66923f17ddd9d37179fdffeb1310dcfcdf103531793bf7 |
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font_01_sfnt_off00009980.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9980 | 2652 bytes |
SHA-256: 3d52fc27d04b8b84b219df719738f768697e09c2050136bc1fe69fcddf4eca6e |
|||
font_02_sfnt_off0000a2e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA2E6 | 16036 bytes |
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63 |
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